Pickled Nozawana Greens (野沢菜漬け, Nozawana-zuke)

Ingredients

Equipment Needed

• •Tsukemono-daru (pickling tub), or a deep ceramic crock, food-safe plastic tub, or large glass jar
• •Oshi-buta (pressing lid) and omoshi (pickling weight), or a clean plate with a brine-filled weight
• •Digital scale
• •Large basin for washing greens
• •Clean cloth or loose lid for covering the vessel

Instructions

1. 1

   Choose and weigh

   Choose Nozawana in late autumn or winter, with tall firm stems, clean green leaves, and no yellowing. Trim off roots and bruised leaves, then weigh the usable greens. The salt is not a guess: use 4% of that weight. Enough salt draws a clean brine and keeps the greens crisp while the slow fermentation begins.

   If you have 1kg greens, use 40g salt. If you have 3kg, use 120g. The arithmetic is dull, which is one reason it works.
2. 2

   Wash the greens

   Wash the Nozawana in a large basin of cold water, paying attention to the thick stem bases where grit hides. Change the water until the basin is clean, then drain the greens well and lay them on towels or hang them over a rack for an hour. Surface water thins the brine you just measured so carefully, and grit has no honorable place in tsukemono.

3. 3

   Wilt and rub

   Let the greens wilt in a cool shaded place for 3 to 6 hours, until the stems bend without snapping. Take a handful of the measured salt and rub it into the thick stem ends. This is where the plant is slowest to season, so we help the salt enter there first. The wilt is not decoration; it lets the tall greens fold into the tub without breaking.

4. 4

   Layer the tub

   Scatter a little of the remaining salt in the bottom of a clean pickling tub or crock. Lay the Nozawana in bundles, stem ends alternating left and right, sprinkling salt, konbu strips, chile rings, and the optional dried persimmon peel between layers. Put a little more salt on the stems than the leaves. A level stack takes pressure evenly, and even pressure makes an even brine.

5. 5

   Press for brine

   Set an oshi-buta, a pressing lid, directly on the greens, or use a clean plate that fits inside the vessel. Add 4 to 6kg of weight, cover the vessel, and leave it in a cool place. Within 12 to 24 hours the salt and pressure should pull enough liquid from the greens to cover them. If the brine has not risen over the greens after 24 hours, add only the 4% top-up brine, never plain water. Plain water weakens the salt and invites trouble.

6. 6

   Lighten the weight

   Once the greens are covered, reduce the weight to 1 to 2kg, just enough to keep everything under the brine. Move the vessel to a refrigerator or a very cold room, ideally 2 to 8 C. Too much weight after the brine rises crushes the stems. Too little lets leaves meet air, and air is where mold begins.

7. 7

   Ferment cold

   Check the pickle every 2 or 3 days with clean hands or clean tongs. Press the greens back below the brine and skim away any stray foam. The smell should be green, salty, and faintly sour; the leaves deepen toward olive while the stems stay pale and crisp. If the brine smells rotten, feels slimy, or mold grows on the submerged greens, discard it. Nothing good is rescued by pretending.

8. 8

   Cut and serve

   Taste after 7 days for a bright asazuke, a light pickle, or wait 14 to 21 days for a deeper Nozawana-zuke. Lift out only what you need, squeeze it lightly, and rinse only if it is too salty. Cut across the stems and leaves into 3 to 4cm lengths so each bite has both crunch and leaf. Serve in a small dish with rice, ochazuke, or tea, and return the rest under its brine at once.

Chef Tips

• •Use real Nozawana if you can find it: long stems, leafy tops, and a clean mustard-green scent. Young turnip greens or komatsuna can make a good salted green, but they are a stand-in, not Nozawana-zuke. We can be practical without lying to the dish.
• •Salt by weight, not by handfuls. Four percent is firm enough for a slow whole-green pickle and still gentle enough to eat with rice once the greens have fermented.
• •A tsukemono-daru, traditionally a wooden pickling tub, is the old tool. A ceramic crock, food-safe plastic tub, or large glass jar works at home. The important thing is not romance; it is a vessel deep enough to keep the greens under brine.
• •For the weight, use an oshi-buta and pickling stone if you have them. A clean plate with a jar on top works, and a sealed bag filled with 4% brine is a good stand-in because a leak will not dilute the pickle.
• •Keep it cold. Warm fermentation makes the greens sour quickly but not especially good. The Nagano character is slow, green, salty, and crisp.

Advance Preparation

• •Buy or harvest the Nozawana as close to pickling day as possible. If you must wait, wrap it loosely and refrigerate for up to 24 hours, then wash and pickle before the leaves tire.
• •The pickle is edible after 7 days as a bright asazuke, but 14 to 21 days gives a deeper winter flavor. Taste, then decide. The brine tells you more than the calendar.
• •Keep finished Nozawana-zuke submerged in its brine and refrigerated. It keeps 4 to 6 weeks this way; once cut, eat that portion within 5 days.
• •For a larger batch, scale the salt directly to 4% of the trimmed greens' weight and use an initial weight about two to three times heavier than the greens.

Frequently Asked Questions

Nutrition Information

1 serving (about 110g)