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Kitchen guide

How to Prepare Kale

Rinse kale under clean running water just before use, dry it well, strip the thick stems, then massage it for salads or cook it briefly. Store the bag unwashed in the fridge at 0–4 °C.

The quick beginner’s guide

Six steps, about 5 minutes — from bag to plate.

Step 1 / 6 · 1 min

Rinse under running water

Just before use, rub the leaves gently under clean, cool running water, opening the curls where soil hides. No soap or detergent.

Step 1

Choosing fresh kale

Look for firm, crisp, evenly green leaves with no yellowing, slimy patches or dark mushy spots, from a bag that has been kept cold.

  • Leaves: firm and crisp, not limp or wet.
  • Color: bright to deep green, with no yellowing.
  • Smell: clean and green, never sour or off.
  • Bag: intact and kept refrigerated in the shop.

Put kale in the fridge as soon as you get home. Details of the 3adan bag are on our kale, and where to buy it on find 3adan.

Step 2

Inspect the leaves

Before washing, look through the leaves, discard any that are yellow, bruised or damaged, and cut away damaged areas on otherwise good leaves.

  1. Spread the leaves out

    Take out only what you need onto a clean surface; return the rest to the fridge unwashed.

  2. Remove what isn’t right

    Discard yellow or slimy leaves and cut away bruised or damaged spots.

  3. Check the curls

    Curly kale’s folds can trap a little soil, so give them extra attention when washing.

If you notice mold or an off smell, go to signs of spoilage.

Step 3

How to wash kale

Rinse kale under clean, cool running water just before you use it, rubbing the leaves gently with your hands — no soap, detergent, vinegar soaks, produce washes or tablets.

Unwashed — Wash Thoroughly Before Use

Keep Refrigerated at 0–4°C. Do not freeze.

The 3adan bag is labeled “Unwashed — Wash Thoroughly Before Use”, so always wash the leaves before eating them, raw or cooked.

  1. Wash your hands

    20 seconds with soap and warm water, before and after handling produce.

  2. Clean your tools

    Use a clean sink, cutting board, knife and salad spinner, away from raw meat and its juices.

  3. Separate the leaves

    Pull the leaves apart so water reaches every part.

  4. Rinse under running water

    Hold each leaf under clean, cool running water and rub it gently with your fingers, opening up the curls.

  5. Check and repeat

    If any soil or grit remains, rinse the leaf again.

Step 4

Dry the leaves well

Dry kale thoroughly in a salad spinner or with a clean towel: dry leaves hold dressing, massage evenly and crisp in the oven instead of steaming.

  1. Salad spinner

    Spin the leaves in small batches, emptying the water between rounds.

  2. Or a clean towel

    Lay the leaves on the towel, roll it up loosely and press gently.

  3. For chips: bone-dry

    Let the leaves sit on the towel for a few minutes before oiling — any moisture stops them crisping.

Step 5

Removing the stems

Strip the leaves from thick stems by pulling along the rib, or cut the rib out with a knife; keep the stems to chop finely and cook longer.

  1. The hand method

    Hold the stem at its base with one hand and slide the fingers of your other hand up along the stem to strip the leaf.

  2. The knife method

    Fold the leaf in half along the rib, then slice along it.

  3. Keep the tender tips

    The thin stems near the leaf tip are tender and can be chopped with the leaves.

  4. Use the stems

    Chop them finely and start cooking them 2–3 minutes before the leaves, or add them to soups, stir-fries, pesto or stock.

More ideas in cooking with kale stems.

Step 6

Cutting kale

Cut kale to suit the dish: thin ribbons for salads, a fine chop for tabbouleh, bite-size pieces for sautés and chips.

CutHowBest for
Thin ribbonsStack the leaves, roll them tightly and slice thinlyMassaged salads, fattoush
Fine chopCut the ribbons crosswise, then chopTabbouleh, omelettes, fillings
Bite-size piecesTear the leaves by hand into small piecesChips, sautés, soups

Try the fine chop in kale tabbouleh.

Step 7

Massaging kale for salads

For raw salads, massage kale for 1–3 minutes with a little olive oil, lemon juice and salt until the leaves soften, darken and shrink slightly.

  1. Start with dry leaves

    Put the well-dried ribbons in a large bowl.

  2. Add the seasoning

    A drizzle of olive oil, a squeeze of lemon and a pinch of salt.

  3. Rub and squeeze

    Rub and squeeze the leaves between your fingers for 1–3 minutes, until they soften and turn darker.

  4. Taste and finish

    Adjust salt and acidity, then add the rest of your ingredients.

Put it into practice with a kale salad with lemon and olive oil.

Flavor

How to reduce kale’s bitterness

Kale’s mild bitterness softens when you remove thick stems, massage the leaves and balance them with acid, fat, a touch of sweetness or salt — or simply cook them.

  • Acid: lemon, sumac or pomegranate molasses.
  • Fat: olive oil, tahini or labneh.
  • A touch of sweetness: pomegranate seeds, apple or dates.
  • Salt: a small pinch tones down bitterness.
  • Brief cooking: mellows the flavor; long cooking brings out a sulfurous taste.

Why is kale bitter in the first place? See why kale tastes bitter.

Cooking

How to cook kale

Kale cooks fast: sauté for 3–5 minutes, steam for 4–6, bake into chips at about 150 °C for 15–20 minutes, or stir into soup for the last 5–10 minutes.

  1. Sauté (3–5 minutes)

    Heat olive oil, cook garlic for 30 seconds, add chopped stems for 2 minutes, then the leaves with a splash of water and toss for 3–5 minutes. Finish with lemon and salt. Recipe

  2. Steam (4–6 minutes)

    Place the leaves over boiling water, covered, for 4–6 minutes until bright green and tender, then dress with olive oil and lemon.

  3. Bake into chips (15–20 minutes)

    Toss bone-dry pieces with a little oil and salt, spread in a single layer and bake at about 150 °C for 15–20 minutes, turning halfway. Watch closely at the end. Recipe

  4. Roast with vegetables

    Add kale to the vegetable tray for the last 5–8 minutes of roasting, until the edges crisp. Recipe

  5. Soups and stews (last 5–10 minutes)

    Add chopped stems with the onions at the start, and the leaves for the last 5–10 minutes. Lentil soup · White bean stew

Food safety

Cooked kale leftovers

Refrigerate cooked kale within 2 hours (1 hour above 32 °C), eat it within 3–4 days and reheat it until steaming hot.

  1. Cool quickly

    Divide leftovers into small or shallow containers so they cool fast, and refrigerate within 2 hours — or within 1 hour in hot weather above 32 °C.

  2. Eat within 3–4 days

    This also applies to dressed kale salads, which should go into the fridge within 2 hours too.

  3. Reheat thoroughly

    Reheat leftovers until they are steaming hot all the way through.

Storage

How to store kale

Keep the kale bag in the fridge at 0–4 °C, ideally in the crisper drawer, and leave the leaves unwashed until you use them. Don’t freeze the fresh bag.

  • In the fridge: at 0–4 °C, in the crisper drawer, in its bag or loosely wrapped.
  • Unwashed: wash only what you’re about to use, right before using it.
  • Away from raw meat: keep produce away from raw meat, poultry, fish and their juices.
  • Don’t freeze the fresh bag: raw leaves turn limp once frozen.

Freezing kale at home (for cooking)

  1. Wash and prep

    Wash the leaves, strip the thick stems and chop.

  2. Blanch

    Plunge into boiling water for about 2 minutes.

  3. Cool immediately

    Transfer to iced water to stop the cooking.

  4. Drain and freeze

    Squeeze out the water, then freeze in labeled, portion-sized bags.

  5. Use it cooked

    Add it straight from frozen to soups, stews, sautés and smoothies — it isn’t suited to raw salads.

Food safety

Signs kale has spoiled

Throw kale out if it is slimy, moldy or dark and mushy, or smells sour or off; yellowing leaves are past their best. When in doubt, throw it out.

  • Yellowing leaves.
  • Slimy or wet patches.
  • Dark, mushy spots.
  • A sour or off smell.
  • Any sign of mold.

If only a few leaves are affected, discard them and check the rest carefully. If mold or an off smell has spread through the bag, discard the whole bag. Leaves that are just a little limp — with no slime, odd smell or mold — are best used cooked.

Have a question about a bag you bought? Contact us.

Sources

  1. 1.Selecting and Serving Produce SafelyU.S. Food and Drug Administration · accessed 3 November 2026
  2. 2.Leftovers and Food SafetyUSDA Food Safety and Inspection Service · accessed 3 November 2026

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