Caviar Bump Recipe

Prepare base mixture

In a small bowl, combine the softened unsalted butter, cream cheese, and crème fraîche. Whisk with a small spatula or fork until smooth and homogenous. The mixture should be soft enough to pipe but firm enough to hold shape.

Season and flavor

Fold in the lemon zest, lemon juice, a pinch of fine sea salt, and a pinch of white pepper. Taste and adjust seasoning very slightly — caviar is delicate, so keep salt minimal.

Form pillows

Transfer the mixture to a small piping bag fitted with a round tip (or use a spoon). On a chilled plate, pipe or spoon eight small domes (about 3/4 inch diameter) to form the 'pillows'. Refrigerate the pillows for 10 minutes to firm slightly.

Top with caviar

Using a small spoon, gently place 1/4 teaspoon (about 2 level measures from the 2 tablespoons) of Kaluga caviar on top of each chilled pillow. Press gently so the caviar nestles into the cream without breaking the pearls.

In a separate small bowl combine the drained prepared horseradish, sour cream, mayonnaise, 1/2 teaspoon lemon juice, 1/4 teaspoon fine sea salt and 1/8 teaspoon sugar. Whisk until smooth and adjust heat: add more horseradish a little at a time if you want more bite. The crema should be cool, slightly tangy and just piquant enough to contrast the caviar.

Taste and correct seasoning. If the horseradish is too aggressive, add a touch more sour cream or a few drops of lemon juice to balance. Transfer crema to a small squeeze bottle or a piping bag for controlled application.

Pipe a small dot (about 1/2 teaspoon) of horseradish crema at the base or on top of each caviar-topped pillow, or serve the crema alongside for guests to add as desired.

Warm the blini or toast the brioche rounds lightly (10–30 seconds in a hot pan or under the broiler) until just golden. Keep warm but not hot; the pillows should remain chilled.

Place two pillows per blini/brioche round (or one larger pillow per piece if preferred). Spoon a small additional amount (optional) of caviar onto each pillow if you want a more generous presentation.

Garnish each pillow with a few microgreens or a sprinkle of finely chopped chives/dill and a tiny crack of black pepper. Add a small lemon wedge to the serving plate.

Serve immediately: present on chilled plates or a bed of crushed ice so the caviar stays cool. Invite diners to place the pillow-on-toast in their mouth in one bite to experience the texture contrast and flavor layering (but they can also add extra horseradish crema to taste).