How to Freeze Seasonal Produce

General Freezing Rules

• Blanch vegetables before freezing — boil briefly, then plunge into ice water. This stops enzyme activity that causes flavor and texture loss.
• Flash freeze on a parchment-lined sheet pan in a single layer before transferring to bags. This prevents pieces from clumping into a solid block.
• Remove as much air as possible from freezer bags. Press it out by hand or use a straw to suck out extra air before sealing.
• Label every bag with the contents and the date frozen. Frozen produce is impossible to identify once it's covered in frost.
• Never refreeze produce that has fully thawed — the texture breaks down significantly and bacteria may have multiplied.
• Freeze produce at its peak ripeness, not when it's starting to go bad. Freezing preserves quality; it doesn't improve it.
• Use freezer-safe bags or containers — regular zip bags are too thin and let in air over time.
• Cool blanched or cooked produce completely before freezing. Putting hot food in the freezer raises the temperature and can partially thaw nearby items.

Vegetables That Freeze Well

Most vegetables freeze beautifully as long as you blanch them first. Blanching means boiling briefly, then immediately shocking in ice water to stop the cooking. Here are common blanch times: green beans 3 minutes, broccoli florets 3 minutes, corn (cut from the cob) 4 minutes, peas 1.5 minutes, carrots (sliced) 3 minutes, spinach and other greens 2 minutes, and zucchini (sliced) 2 minutes. Bell peppers are the exception — they freeze well raw with no blanching needed. Just slice or dice and flash freeze on a sheet pan. Most properly blanched and frozen vegetables last 8–12 months in the freezer.

Fruits That Freeze Well

Berries (strawberries, blueberries, raspberries, blackberries) are the easiest — spread them in a single layer on a sheet pan, freeze until solid, then transfer to bags. This flash-freeze method keeps them from turning into one giant clump. Stone fruits (peaches, plums, cherries, nectarines) should be pitted and sliced before freezing. Bananas should be peeled first — frozen banana peel is nearly impossible to remove. Citrus doesn't freeze well whole, but juice and zest freeze perfectly in ice cube trays. For fruit that browns (peaches, apples), toss with a little lemon juice before freezing. You can use a sugar pack method (toss fruit with sugar before freezing) for sweeter results, or a dry pack method (freeze without sugar) for more versatile use later. Most frozen fruits last 6–12 months.

Herbs

Fresh herbs are expensive and go bad fast — freezing is the best way to save them. The two best methods: freeze chopped herbs in olive oil in ice cube trays (pop out a cube whenever you're sautéing), or flash freeze whole sprigs on a sheet pan, then strip the leaves into a freezer bag. Woody herbs like rosemary, thyme, sage, and oregano freeze exceptionally well and hold their flavor for months. Tender herbs like basil, cilantro, parsley, and mint lose their texture when frozen but work perfectly as oil cubes for cooking — just don't try to use them as a fresh garnish after thawing.

What NOT to Freeze

• Lettuce and salad greens — they turn to watery mush when thawed.
• Cucumbers — too high in water content; they go completely limp.
• Raw potatoes — they turn grainy and mealy. Cook or blanch them first.
• Celery — goes limp and loses all crunch. Fine for soups if frozen, but not for eating raw.
• Watermelon — becomes watery and loses its texture entirely.
• Radishes — turn pithy and lose their snap.
• Raw tomatoes for salads — they break down into mush. However, frozen tomatoes work fine for sauces, soups, and stews.