Big Mama tomatoes – Plum-shaped and enormous, Big Mama Hybrid tomatoes grow up to 5 in. (13-cm) long and 3 in. (8 cm) across. In the kitchen, this variety is easy to peel and core. One of the best paste tomatoes, Big Mama is excellent in sauces. These tomatoes need at least one inch (2.5 cm) of water per week and prefer six hours or more of direct sun each day.