Caviar, Pickled Mustard Seeds, Chive Recipe

Prepare and soak seeds

Place mustard seeds in a small heatproof bowl or jar. Pour boiling water over them to cover by about 1/2 inch and let sit 10 minutes to hydrate and slightly soften. Drain and discard the soaking water.

Make pickling brine

In a small saucepan combine white wine vinegar, water, granulated sugar, and fine sea salt. Add the bay leaf, black peppercorns and the optional crushed garlic. Bring mixture to a gentle simmer over medium heat, stirring to dissolve the sugar and salt.

Combine and steep

Add the drained mustard seeds to the simmering brine, stir, then remove the pan from heat. Transfer seeds and liquid into a clean jar (if not already). Let cool to room temperature, then seal and refrigerate at least 12 hours, preferably 24–48 hours, to allow seeds to pickle and mellow. (Makes more than needed; leftover keeps refrigerated for 3–4 weeks.)

Bring components to serving temperature

Remove the caviar from the refrigerator about 10 minutes before serving so it is just off-chill (do not let it warm). If serving blini or brioche, warm briefly in a low oven (275°F / 135°C) for 5–7 minutes or toast lightly. Bring crème fraîche to cool room temperature or keep chilled per preference.

Dress mustard seeds

Spoon 1–2 tablespoons of the pickled mustard seeds into a small bowl and lightly drain so there is some brine but not soupy. Reserve the remaining seeds for other uses.

Plate the caviar

On each serving piece (brioche round or blini), place a small pat (about 1/2 tsp) of crème fraîche. Using a mother-of-pearl spoon or other non-metal spoon (preferred), gently spoon approximately 1/4 to 1/3 teaspoon of caviar on top of the crème fraîche to avoid metallic taste and to preserve delicate texture.

Finish with mustard seeds and chive

Top each caviar-topped bite with about 1/2 teaspoon of the pickled mustard seeds. Sprinkle a small pinch (about 1/4 teaspoon) of finely snipped chives over each. Add a tiny microgreen if using. Finish with a very light dusting (a few flakes) of fleur de sel and a single turn of freshly ground black pepper—keep salt minimal so as not to overpower the caviar's brininess.

Serve

Arrange the prepared rounds on a chilled or room-temperature platter. Serve immediately with lemon wedges on the side (a single gentle squeeze per bite, if desired). Recommend one generous canapé per person as an appetizer or 2–3 per person for a tasting; adjust portions to taste.

Butter: If using unsalted butter, lightly spread a thin film on toasted brioche before adding crème fraîche for richness. Crème fraîche can be piped for a neater presentation. Use mother-of-pearl, bone, or plastic spoons for the caviar to avoid any metallic aftertaste. Leftover pickled mustard seeds keep refrigerated up to 3–4 weeks and add texture to fish, salads, or sandwiches.