Your complete guide to kale leaves - discover how to store it properly, identify when it's gone bad, and find the best substitutes for your recipes.
Storage times and freshness tips for kale leaves in different conditions.
Safety first: This guide provides general information. When in doubt, throw it out! Trust your senses and err on the side of caution. If something smells, looks, or tastes off, don't consume it.
Similar to unwashed: yellowing, wilting, limpness, slimy texture, or a strong, off-putting odor. Cut edges may brown faster.
Visually check for bright green color and absence of discoloration, especially on cut surfaces. Feel for crispness; avoid leaves that are overly soft or developing a slimy film. Smell for any sour, pungent, or sulfurous odors.
After washing, thoroughly dry the leaves using a salad spinner or paper towels. Store in an airtight container lined with a paper towel to absorb any residual moisture, which helps prevent spoilage. Change the paper towel if it becomes damp.
Sour or off-odor, visible mold growth (fuzzy white, green, or black spots), significant discoloration (darker, grayish, or mottled), slimy texture, or an unusually dry/hardened surface.
Smell for any sour, yeasty, or unpleasant odors that weren't present when fresh. Visually inspect for mold or unusual changes in color or texture. If it looks or smells suspicious, it's best to discard it. Do not taste to test.
Cool cooked kale completely before transferring to an airtight container and refrigerating. This prevents condensation and inhibits bacterial growth. Reheat thoroughly to an internal temperature of 165°F (74°C).
Yellowing or browning of leaves, wilting, limp or soft texture, slimy coating, strong sulfurous or unpleasant odor.
Visually inspect for bright green color; avoid leaves with significant yellow, brown, or black spots. Touch the leaves – they should feel crisp and firm, not soft or slimy. Smell for a fresh, earthy scent; a strong, pungent, or rotten smell indicates spoilage.
Store unwashed in a loose plastic bag or a produce bag in the crisper drawer of your refrigerator. Avoid washing until just before use, as excess moisture can accelerate spoilage. Ensure good air circulation.
Significant freezer burn (dry, leathery, or discolored patches, typically grayish-brown), strong off-flavors or odors (though rare if properly blanched and stored), or a very mushy texture after thawing (indicating poor blanching or very old age).
Visually check for excessive freezer burn. While some ice crystals are normal, large, non-uniform ice formations can indicate temperature fluctuations. The kale should still have a relatively vibrant green color, even if slightly duller than fresh. If it smells distinctly 'off' after thawing, discard.
To blanch: wash and chop kale, boil for 2-3 minutes, then immediately plunge into ice water for the same duration. Drain very well and squeeze out excess water. Pack into freezer-safe bags or containers, removing as much air as possible (a vacuum sealer is ideal). Label with the date. Freezing raw kale without blanching is possible but results in poorer quality (texture, color, and flavor) over time.