Crostini are little appetizers that you can invent yourself depending on what’s in season and what you have in the house. Salsa verde is a tangy herby sauce often served to accompany boiled meats, but delicious in its own right.
Cut thin slices of firm bread (Tuscan-style bread is best but baguette will do), toast it if you like, and top with the sauce:
Find it online: https://organictuscany.org/recipes/crostini-salsa-verde/