Once upon a time, carpaccio was made only from thin slices of raw beef. Later, in modern cooking, there were options for fish and even vegetarian carpaccio. For example, such a tomato.
Wash tomatoes. Make a shallow cruciform incision on top and lower for 1 min. into boiling water. Then remove the skin from them.
Cut the fruit into 4 parts, carefully remove the seeds from them.
Put prepared tomatoes between sheets of parchment greased with olive oil, put a press on top.
In 20 minutes. put the tomatoes on a dish, sprinkle with lemon juice, salt and pepper. Place thin onion rings and olive slices on top. Sprinkle with grated Parmesan and drizzle with olive oil.
By the way: Once upon a time, the Italian dish carpaccio was prepared only from thin slices of raw beef. Fish and vegetarian carpaccio have appeared in modern cooking.