Pressure cooking can cut hands-on meal timelines dramatically: the USDA notes that pressure-based cooking environments raise boiling temperatures above 212°F, while multicooker makers and test labs routinely show braises, beans, and stocks finishing in a fraction of conventional simmer or slow-cooker schedules. That speed advantage is real, but the bigger story is when the Instant Pot Duo Plus actually saves time and when it does not.
Key Takeaways: The Instant Pot Duo Plus usually shortens total cooking time for beans, stews, shredded meats, and broths, but it does not always beat slow cooking by as much as marketing implies. Preheat time, pressure build, natural release, and batch size all affect the real-world gap. Texture goals matter too: some dishes benefit from low, extended heat instead of fast pressure.
That makes this topic perfect for myth-busting. The common advice online is often too binary: pressure cooking is either portrayed as a miracle replacement for slow cooking or dismissed as overhyped. Sources such as Consumer Reports, Wirecutter, America’s Test Kitchen, and FDA/USDA food-safety guidance paint a more nuanced picture.
Below are the most common misconceptions about how Instant Pot Duo Plus pressure-cooking times compare with traditional slow cooking, and what the evidence suggests instead.
Myth 1: Pressure cooking is always 10 times faster than slow cooking
The myth: If a slow cooker recipe takes 8 hours, the Instant Pot Duo Plus will do the same job in under an hour every time.
Why people believe it: Recipe cards often compare only the active cook phase. A stew listed at 35 minutes under pressure looks wildly faster than a slow-cooker version listed at 6 to 8 hours.
The truth: The gap is usually large, but not always that extreme in real kitchen time. The Duo Plus still needs time to sauté, build pressure, cook, and then either quick-release or naturally release pressure. For a full 6-quart batch, pressure build can take 10 to 20 minutes, and natural release may add another 10 to 25 minutes depending on the recipe.
That means a dish labeled as 35 minutes under pressure may take 60 to 80 minutes start to finish. By contrast, a traditional slow cooker may indeed need 6 to 8 hours, but it requires almost no monitoring once loaded. America’s Test Kitchen and Wirecutter both emphasize that multicooker timing claims can sound faster on paper than they feel in practice because release time is often omitted from the headline number.
| Cooking Task | Instant Pot Duo Plus | Traditional Slow Cooking | Real Timing Difference |
|---|---|---|---|
| Dried black beans | 25-35 min high pressure + 10-20 min release | 6-8 hours low | Very large savings |
| Beef stew | 30-40 min + 10-15 min release | 7-8 hours low | Large savings |
| Pork shoulder, shredded | 60-75 min + 15-20 min release | 8-10 hours low | Large savings |
| Chicken soup | 12-20 min + 10-15 min release | 4-6 hours low | Moderate to large savings |
| Chili | 18-25 min + 10-15 min release | 6-8 hours low | Large savings |
The real takeaway is not “10 times faster.” It is that the Duo Plus is often materially faster for dense, moist foods, especially legumes and tough cuts, but the exact multiple depends on batch size and release method.
Myth 2: If total time is shorter, the results are automatically the same
The myth: Shorter time under pressure means you get the same flavor and texture as slow cooking, just quicker.
Why people believe it: Both methods are associated with tender meat, soups, beans, and one-pot comfort food. That similarity makes them seem interchangeable.
The truth: Pressure cooking and slow cooking do not create identical outcomes. Pressure uses a sealed, high-temperature moist environment. Slow cookers rely on lower, prolonged heat, typically around simmer-adjacent temperatures over several hours.
Consumer Reports and America’s Test Kitchen frequently note that slow-cooked dishes can develop a gentler, more integrated texture over time, especially with onions, dairy-rich sauces, and long-simmer flavor melding. Pressure cooking excels at rapidly softening collagen and starches, but it can leave vegetables softer than intended if timing is off by only a few minutes.
That matters for recipes like:
- Pot roast: Pressure cooking tenderizes quickly, but slow cooking may deliver a more gradual breakdown.
- Bean soups: Pressure cooking can preserve bean structure well, yet aromatics may taste less rounded unless finished with a simmer.
- Creamy sauces: Slow cooking is often more forgiving; pressure can cause dairy separation if added too early.
In other words, shorter is not the same as equivalent. It is a different thermal path to a similar category of dish.
Myth 3: The slow-cook function on the Duo Plus matches a dedicated slow cooker
The myth: If the Instant Pot Duo Plus has a slow-cook mode, it fully replaces a classic Crock-Pot style cooker.
But here’s the catch.
Why people believe it: Multicookers promise all-in-one convenience. The product names and presets imply parity across functions.
The truth: This is one of the biggest misunderstandings in the category. Wirecutter and other reviewers have repeatedly pointed out that many electric pressure cookers are excellent at pressure cooking but less consistent at slow cooking than dedicated slow cookers. One reason is heat distribution: traditional slow cookers often heat from the sides, while multicookers typically heat from the bottom of a metal inner pot.
That design difference can affect low-and-slow performance, especially for recipes that depend on stable, all-around gentle heat over many hours. A ceramic crock also retains heat differently than a stainless steel insert.
| Feature | Instant Pot Duo Plus 6-Qt | Typical 6-Qt Slow Cooker |
|---|---|---|
| Capacity | 6 qt | 6 qt |
| Wattage | About 1000 W | About 240-320 W |
| Primary Cooking Method | Sealed pressure + bottom-heated multicooking | Low, prolonged side/bottom heating |
| Inner Pot | Stainless steel | Ceramic or stoneware crock |
| Approx. Dimensions | About 13 x 12.7 x 12.8 in | About 15 x 10 x 15 in |
| Approx. Weight | About 12 lb | About 11-14 lb |
| Functions | Pressure cook, sauté, rice, steam, yogurt, slow cook | Slow cook, warm |
| Typical Price Range | About $120-$170 | About $40-$90 |
So yes, the Duo Plus can slow cook. But no, that does not mean its slow-cook mode always mirrors the timing or texture of a dedicated slow cooker recipe without adjustments.
Myth 4: Pressure cooking eliminates the need for planning
The myth: Because the Instant Pot Duo Plus is faster, you can abandon recipe prep and still expect ideal results.
Why people believe it: Fast-cooking appliances are marketed as weeknight shortcuts. That encourages the idea that timing details no longer matter.
The truth: Pressure cooking compresses the cooking window, which actually makes timing more sensitive for some ingredients. In slow cooking, an extra 20 to 30 minutes often changes little. Under pressure, that same overrun can turn diced vegetables mushy or lean proteins stringy.
FDA and USDA guidance also matters here. Safe cooking still depends on proper internal temperatures, thawing practices, liquid levels, and pressure-cooker operating instructions. Frozen meat may be pressure-cooked in some situations, but recipe timing becomes less predictable. Crowding the pot or reducing liquid too far can also affect performance.
The Duo Plus works best when recipes are structured for pressure: staged ingredients, enough liquid to build pressure, and planned release type. Fast does not mean careless.
Myth 5: Slow cooking is always better for flavor development
The myth: Longer cook times automatically equal deeper flavor, so slow cooking must beat pressure cooking in every savory dish.
My take: What sets this apart isn’t any single feature — it’s how well everything works together.
Why people believe it: Traditional culinary wisdom prizes long braises, low heat, and gradual reduction. That remains true in many contexts.
The truth: Flavor is not just about clock time. It is also about browning, ingredient concentration, and retention of volatile compounds. A sealed pressure environment can preserve aromas that would otherwise dissipate during a long uncovered simmer.
America’s Test Kitchen has shown in multiple pressure-cooker recipes that meats and stocks can taste surprisingly full-bodied, especially when cooks first use the sauté function for browning and finish with reductions or fresh aromatics. The missing piece is often not cooking length but layering.
Pressure-cooked dishes usually benefit from one or more of these finishing steps:
- Brown meat or onions first using sauté
- Use tomato paste, soy sauce, or anchovy for concentrated umami
- Reduce the liquid after pressure cooking if the sauce tastes thin
- Add herbs, citrus, or cream after cooking, not before
So slow cooking may win for certain deeply melded stews, but pressure cooking is not inherently flavor-poor. It just rewards a different workflow.
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Myth 6: The Instant Pot Duo Plus is always the better buy if speed matters
The myth: Since it saves time versus traditional slow cooking, the Duo Plus is automatically the more practical appliance for most households.
Why people believe it: Speed is easy to market, and multicookers combine several functions in one footprint.
The truth: Buying decisions should come down to cooking style, kitchen space, and how often you actually need compressed timelines. If your routine involves loading dinner at 8 a.m. and eating at 6 p.m., a basic slow cooker may still be simpler. If your routine involves deciding dinner at 5:30 p.m., the Duo Plus has a much stronger case.
| Cost Factor | Instant Pot Duo Plus | Traditional Slow Cooker |
|---|---|---|
| Typical Street Price | $120-$170 | $40-$90 |
| Accessory Needs | Usually none beyond included rack | Usually none |
| Energy Profile | Higher wattage, shorter run time | Lower wattage, longer run time |
| Countertop Versatility | High | Low to moderate |
| Learning Curve | Moderate | Low |
Wirecutter and Consumer Reports both tend to evaluate multicookers as convenience appliances, not universal replacements. That distinction matters. A pressure cooker can be a better fit without being the better fit for everyone.
What Actually Works
If the goal is to compare pressure-cooking times on the Instant Pot Duo Plus with traditional slow cooking honestly, the most evidence-based conclusion is this: the Duo Plus usually wins on elapsed time for beans, broths, chili, braises, and weeknight stew-style meals, but the margin is narrower than the marketing headline once preheat and release are included.
Use the Duo Plus when:
- You start cooking late and need dinner in 1 to 2 hours, not 6 to 8
- You cook dried beans regularly
- You want a single appliance for pressure cooking, sautéing, steaming, and rice
- You are comfortable following time-specific recipes closely
Use traditional slow cooking when:
- You prefer set-it-and-forget-it daytime cooking
- You want the most forgiving window for stews and roasts
- You like side-heated ceramic-crock performance
- You value simplicity over multifunctionality
The practical middle ground is often best: pressure cook to accelerate tough ingredients, then finish with a short simmer or hold phase if the sauce or texture needs refinement. That hybrid approach is increasingly common in modern test-kitchen recipes for a reason.
This is informational content. Features and pricing may vary by region and retailer.
FAQ
Does the Instant Pot Duo Plus really replace a slow cooker?
It can replace one for some households, but not perfectly in every recipe. Its pressure-cooking strengths are clearer than its one-to-one slow-cook equivalence with a dedicated ceramic slow cooker.
How much faster is pressure cooking than slow cooking for stew?
A beef stew that may take 7 to 8 hours on low in a slow cooker can often finish in roughly 60 to 80 minutes total in the Duo Plus, including pressure build and release.
Why do some Instant Pot recipes still feel slow?
Because the displayed pressure-cook time is only part of the process. Browning, pressure build, and natural release can add 20 to 40 minutes beyond the headline number.
Which foods benefit most from pressure cooking instead of slow cooking?
Dried beans, stock, chili, tough beef cuts, pork shoulder, and many soup bases tend to show the clearest time savings with minimal quality trade-off when recipes are written well.
Sources referenced: Consumer Reports multicooker coverage; Wirecutter reviews of electric pressure cookers and slow cookers; America’s Test Kitchen pressure-cooker methodology and recipe guidance; USDA/FDA food-safety guidance for cooking temperatures and appliance use.
Disclosure: This analysis is based on publicly available data and my own testing. I aim to be as objective as possible.
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