Blanching
Briefly boiling food then plunging it into ice water to stop cooking — used to preserve color, texture, and nutrients.
Blanching is a two-step cooking technique: first a brief boil, then an immediate ice bath. It's one of the most useful techniques in any kitchen — fast, forgiving, and the difference between dull frozen vegetables and vibrant ones.
When to blanch
- Vegetables for freezing: Blanching deactivates enzymes that cause flavor and color loss during storage
- Peeling: Tomatoes, peaches, and almonds peel easily after 30-60 seconds of blanching
- Salads: Green beans, asparagus, and broccoli stay vibrant green instead of turning army drab
- Meal prep: Par-cook vegetables ahead, then finish later with a quick sauté or roast
How to blanch
- Bring a large pot of salted water to a rolling boil — use about 4 liters per 500g of vegetables
- Prepare an ice bath (bowl of ice + cold water)
- Drop food in boiling water for 30 seconds to 3 minutes depending on size and density
- Transfer immediately to ice bath — this is the critical step that stops carryover cooking
- Drain once cool and pat dry
Common blanching times
| Vegetable | Time |
|---|---|
| Green beans | 2-3 min |
| Broccoli florets | 2 min |
| Asparagus (thin) | 1-2 min |
| Cauliflower florets | 2-3 min |
| Snap peas | 1-2 min |
| Tomatoes (for peeling) | 30 sec |
| Almonds (for peeling) | 1 min |
Why blanching works
The brief boil deactivates peroxidase and catalase — enzymes responsible for off-flavors, texture breakdown, and color loss. The ice bath halts cooking instantly, so vegetables stay crisp instead of turning mushy. This one-two punch is why restaurant vegetables look and taste better than most home-cooked ones.
Tips for better blanching
- Salt your water generously — it seasons the vegetables and raises the boiling point slightly
- Don't overcrowd the pot — adding too many vegetables drops the water temperature and leads to uneven cooking
- Use enough ice — if the ice melts before the vegetables cool, they'll keep cooking
- Dry thoroughly before freezing — excess water causes freezer burn and ice crystals
Blanching in Fond
Fond's Cook Mode includes built-in timers, so you can set the exact blanching time for each vegetable and get an alert when it's time to transfer to the ice bath. No more guessing or overcooking.
