Can I use sardines instead of smoked sprats?
Yes. Canned sardines in oil are a direct substitute and offer a similar flavor and texture. Drain excess oil before layering.
How do I make the garlic mayo less strong?
Use half a clove of garlic instead of a full clove, or let the mayo sit for 15 minutes before serving to mellow the raw garlic bite.
Can I make these toasts ahead?
Toast the bread and prepare the garlic mayo in advance, but assemble the toasts no more than 30 minutes before serving to prevent the bread from becoming soggy.
What bread works best?
Whole wheat bread provides sturdy structure and nutty flavor, but rye, sourdough, or dark pumpernickel are traditional Russian alternatives.
How many servings does this recipe make?
This recipe makes 2 open-faced toasts (one per slice of bread). Double or triple the ingredients to serve more guests.