Instant Pot Duo 7-in-1 vs COSORI 9-in-1: Which Pressure Cooker Should You Buy? (UK 2026)
Published 24 October 2026 • 🍲 Slow Cookers & Pressure Cookers • Contains affiliate links
The COSORI costs £9 less than the Instant Pot Duo, earns a slightly higher star rating, and includes two extra cooking functions. Both hold 5.7 litres and pressure-cook unsoaked dried beans in under 30 minutes. What separates them is the inner pot: stainless steel versus ceramic nonstick, a practical difference that shapes how each appliance handles both cooking and washing up.
🍲 Products Compared
Instant Pot Duo 7-in-1 Electric Pressure Cooker 6 Quart
£89.99
* 4.7/5
Check Price *COSORI Electric Pressure Cooker 6 Quart 9-in-1
£80.94
* 4.8/5
Check Price *
📊 Specs Comparison
| Feature | Instant Pot Duo 7-in-1 | COSORI 9-in-1 |
|---|
| Price | £89.99 | £80.94 |
| Rating | 4.7/5 | 4.8/5 |
| Key Feature 1 | 7 cooking functions | 9 cooking functions (incl. sous vide) |
| Key Feature 2 | Stainless steel inner pot | Ceramic nonstick inner pot |
| Wattage/Power | 1,000W | 1,100W |
| Capacity | 6 qt (5.7L) | 6 qt (5.7L) |
| Warranty | 1 year | 2 years |
* Instant Pot Duo 7-in-1 Electric Pressure Cooker 6 Quart
- * Stainless steel pot handles high heat without coating wear; browns meat properly for stews and curries
- * 12 safety mechanisms including lid lock, pressure release valves, and overheat protection
- * Enormous recipe community: millions of Duo-specific recipes tested and shared over 10-plus years
- * Dishwasher-safe stainless pot can last 15 years or more without surface degradation
- ❌ Manual steam release valve puts your hand close to escaping hot steam
- ❌ Sealing ring holds onto savoury smells; a second ring for yogurt or desserts is a near-essential extra purchase
* COSORI Electric Pressure Cooker 6 Quart 9-in-1
- * Ceramic nonstick inner pot releases rice and sticky sauces cleanly, cutting wash-up time to under 2 minutes
- * Backward-angled steam vent directs steam away from your hand, reducing burn risk during pressure release
- * Adds sous vide to the standard function set, with temperature control from 30°C to 121°C
- * 2-year warranty is twice the Instant Pot's coverage and is honoured directly by COSORI UK support
- ❌ Ceramic coating will show wear over 3 to 5 years of daily use; not as long-lived as bare stainless steel
- ❌ Maximum pressure of 10 PSI is lower than the Instant Pot's 11.6 PSI, so dense cuts like brisket may need a few extra minutes
📝 User Reviews
Instant Pot Duo buyers on Amazon consistently mention reliability and the large library of community recipes built around the Duo over the past decade. COSORI buyers most often praise the ceramic pot for making cleanup fast and note that the controls are easy to pick up for first-time pressure cooker owners.
🏆 Verdict
At £80.94 with a 2-year warranty and 9 functions, the COSORI is the stronger value for most UK households. The Instant Pot justifies its £9 premium only if browning and searing matter to you, or if you want a stainless steel pot built to last 15-plus years without any coating to wear out.
Instant Pot Duo best for experienced cooks who prioritise stainless steel durability, strong browning performance, and access to a decade of tested community recipes. COSORI best for beginners, households that cook rice and grains several times a week, and anyone who wants easier cleanup and a longer warranty.
❓ FAQs
Are both pressure cookers compatible with UK mains voltage?
Yes. Both the Instant Pot Duo and COSORI 9-in-1 sold in the UK operate at 220-240V/50Hz and require no voltage adaptor. If ordering from a non-UK seller, confirm the listing specifies a UK Type G plug.
Which works better as a slow cooker?
Both include a slow cook mode, but neither exactly replicates a dedicated slow cooker. The Instant Pot's slow cook function runs slightly hotter than a Crock-Pot; set it to 'Less' and add around 15% extra liquid. The COSORI behaves similarly. If slow cooking is your main use, a dedicated slow cooker under £30 will outperform both.
Does the COSORI's lower maximum pressure matter in practice?
Rarely. The COSORI tops out at 10 PSI versus the Instant Pot's 11.6 PSI. For everyday recipes including beans, rice, soups, and chicken, the difference amounts to under 5 extra minutes. Only very dense cuts of meat cooked at full pressure for long periods will show a measurable gap.
As an Amazon Associate we earn from qualifying purchases. Prices accurate as of 24 October 2026.