Step 1
Place 4 slices of smoked salmon side by side on a cutting board, forming a rectangle.
Step 2
Spread cream cheese evenly on salmon, about 1/8 inch thick.
Step 3
Cut sweet bread to same size as salmon; place on top of smoked salmon and cream cheese.
Step 4
Roll up lengthwise to create a roulade, wrap tightly with plastic wrap and place in freezer for 2 hrs.
Step 5
In the meantime, mix sour cream with chives, lemon juice, salt and pepper to taste.
Step 6
Remove roulade from freezer, slice in 1/4 inch slices.
Step 7
Place a dollop of the sour cream mixture on top of roulade slices. Serve along with lettuce, red onions, capers and lemon wedge.