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USDA FoodKeeper App

USDA FoodKeeper App is a tier 1 source on AskedWell — Peer-reviewed / governmental / scientific. Highest institutional trust. It's cited in 6 cooking, fermentation, and baking answers. Click any answer below to read the cited claim in context.

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Every answer citing this source

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  1. how long does… · baking

    How long does bread last at room temperature?

    Bakery + homemade bread (no preservatives): 2-4 days room temp. Commercial sandwich bread (with preservatives): 5-7 days. Sourdough: 4-7 days (acid extends life). Refrigeration accelerates staling; freezing preserves best.

    Why we cite it here: Official US storage times for bread types

  2. how long does… · cooking

    How long do leftovers last in the fridge?

    Standard USDA rule: 3-4 days refrigerated below 40°F. Cooked rice + grains: 4-6 days. Soups + stews: 3-4 days. Tomato-based dishes: 5-7 days (acid extends). Pizza: 3-4 days. Cool within 2 hours; reheat to 165°F.

    Why we cite it here: Official US leftovers storage time database

  3. how long does… · cooking

    How long does yogurt last in the fridge?

    Unopened yogurt: 1-2 weeks past sell-by date refrigerated (USDA). Opened yogurt: 5-7 days. Greek yogurt: 1-3 weeks past sell-by. Live cultures actively suppress spoilage. Whey separation = normal. Mold = discard entire container.

    Why we cite it here: Official US storage time database with yogurt section

  4. how long does… · cooking

    How long does cheese last in the fridge?

    Hard cheeses (Parmesan, aged cheddar): 4-6 months unopened, 3-4 weeks opened. Soft cheeses (brie, mozzarella): 1-2 weeks. Shredded cheese: 5-7 days opened. Fresh cheese (ricotta): 1 week. Mold on hard cheese can be cut away; soft cheese mold = discard.

    Why we cite it here: Official US storage time database for cheese types

  5. how long does… · cooking

    How long does butter last in the fridge?

    Salted butter: 1-3 months fridge unopened; 2-4 weeks opened. Unsalted butter: 3 weeks fridge unopened; 2-3 weeks opened. Frozen butter: 6-9 months quality. Butter at room temperature in covered crock: 1-2 weeks (salted only). Rancidity = discard.

    Why we cite it here: Official US storage time database with butter section

  6. how long does… · cooking

    How long do onions last in the pantry?

    Whole onions in cool dry pantry: 1-3 months. Cut onions: 7-10 days refrigerated. Sweet onions (Vidalia, Walla Walla): 2-4 weeks pantry. Shallots: 1 month pantry. Garlic: 3-6 months pantry. Spring onions: 1-2 weeks refrigerated. Refrigeration shortens onion life.

    Why we cite it here: Official US storage times for onions + alliums

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