Minestrone (/ˌmɪnəsˈtroʊni/ ; [mineˈstroːne]) is a thick soup of Italian origin made with vegetables, often with the addition of pasta or rice. Common ingredients include beans, onions, celery, carrots, stock, and tomatoes.There is no set recipe for minestrone, since it is usually made out of whatever vegetables are in season.It can be vegetarian, contain meat, or contain a meat-based broth (such as chicken stock).ommon ingredients include beans, onions, celery, carrots, stock, and tomatoes. There is no set recipe for minestrone, since it is usually made out of whatever vegetables are in season. It can be vegetarian, contain meat, or contain a meat-based broth (such as chicken stock).