I just had an incredible bowl of white borsht at the Polish hole-in-the-wall Lomzynianka on Manhattan Ave. in Greenpoint. It made me want to explore soups. I'll list some of my favorites, and would like to hear about great soup experiences of others.
Cold red borsht at Christine's in the East Village.
Hot red borsht at Veselka.
Yellow gazpacho at Brother's Bar-B-Que on Varick (all right, so it's a little late for that)
And in Jackson Heights, caldo gallego at Meson Asturias on Baxter, sopa de blanquillos (white beans) at La Pequeña Colombia on Roosevelt and sopa de lentejas (lentil) at Meson Colombiano on Roosevelt (though it's been awhile and the cook might have changed).
And for an unusual Ghanaian experience, light soup with ball of rice in the bottom (or fufu) and pieces of goat or fish and whatever else you want added at Kowus on 3rd Ave. and 165th in the Bronx (best eaten with your right hand).