Mustard-Dressed Greens (からし和え, Karashi-ae)

Ingredients

Equipment Needed

• •Wide pot for blanching
• •Bowl of cold water
• •Small suribachi or mixing bowl for the mustard dressing
• •Chopsticks or clean fingertips for dressing the greens

Instructions

1. 1

   Choose the greens

   Choose greens that look awake: stems crisp, leaves bright, no yellow edges, no wet collapse at the tips. Nanohana is the spring choice, pleasantly bitter and floral. Shungiku brings a deeper herbal taste in cold weather. If neither is good today, use komatsuna or spinach. Sourcing first, always. Mustard can sharpen a green, but it cannot rescue one that's already tired.

   Karashi-ae works because the dressing is spare. The greens have to carry themselves.
2. 2

   Mix the mustard

   Stir the karashi powder with the warm water in a small bowl until smooth, then leave it for five minutes. This short rest lets the mustard wake up and develop its heat. Add the soy sauce, dashi, mirin, and sugar if using, then stir until glossy. Taste it. It should be sharp first, then salty, with the dashi rounding the edges.

   Use Japanese karashi if you can. Prepared Western mustard brings vinegar and other seasonings, which changes the dish rather than simply standing in.
3. 3

   Blanch the stems

   Bring a wide pot of water to a lively boil and salt it lightly. Hold the greens by the leaves and lower the stems into the water first for twenty to thirty seconds. Stems need a little head start because they are thicker than the leaves, and this keeps the whole bundle tender at the same moment.

4. 4

   Finish the blanch

   Lower the leaves into the water and cook just until the color brightens and the greens bend without turning limp, another thirty to sixty seconds depending on the variety. Nanohana and shungiku should keep a little bite. Spinach will be quicker. Don't wander off. This is a small dish, and small dishes have no patience for neglect.

5. 5

   Cool and squeeze

   Lift the greens into cold water to stop the cooking, then drain them well. Gather them into a loose bundle and squeeze from root end toward leaf end until no water runs freely. The squeeze is the point: too much water thins the dressing and leaves the mustard floating around the bowl instead of clinging to the greens.

   Squeeze firmly, then stop. You want dry greens, not crushed greens.
6. 6

   Cut the bundle

   Lay the squeezed greens straight on the board and cut them into pieces about two inches long. Keep the cuts even so each bite carries stem, leaf, and dressing together. Let the knife make the dish neat, not precious.

7. 7

   Dress and rest

   Put the greens in a bowl, loosen them gently with your fingers, and spoon over most of the mustard dressing. Toss with chopsticks or your fingertips until every piece is lightly coated. Let it rest five minutes, then taste and add the remaining dressing only if needed. The greens should taste awake, not soaked.

8. 8

   Plate with space

   Lift the greens into a small mound, letting excess dressing stay behind in the bowl. Set them off-center in a small dish and sprinkle with sesame if using. Serve cool or at room temperature. Leave it room: karashi-ae is strongest when it looks as restrained as it tastes.

Chef Tips

• •For a meatless table, use konbu and dried shiitake dashi. That's honmono in the temple-kitchen sense, not a lesser version. The dressing only needs a tablespoon, but that tablespoon matters.
• •If using nanohana, don't cook away its bitterness. That small bitterness is the season speaking, and the mustard is there to meet it, not erase it.
• •Make the dressing stronger than you think before it touches the greens. Blanched vegetables soften sharpness quickly, especially after a short rest.
• •Don't dress the greens while they're wet. Water is the enemy here. It dilutes the mustard and makes the dish taste timid.
• •Karashi powder keeps well, but once mixed with water its bite fades. Mix it fresh when you can.

Advance Preparation

• •The greens can be blanched, cooled, squeezed, and cut up to one day ahead. Keep them covered in the refrigerator, then dress shortly before serving.
• •The mustard dressing can be mixed a few hours ahead, but its heat softens as it sits. For the clearest bite, mix the karashi with water close to serving time.
• •Dressed karashi-ae keeps for one day refrigerated. It will taste milder the next day, still useful beside rice, but no longer quite as bright.

Frequently Asked Questions

Nutrition Information

1 serving (about 85g)