From the late Fred Hempl. The Tomato world lost a true hero recently this late 2023. This is one of his creations we have been saving for a few years. Beefsteak/heart. It is a yellow bicolor, with pink marbling and yellow stripes, flavor is sweet and bright. The fruits are also durable, compared to most gourmet beefsteak fruits, and they have above average shelf life. Rainbow Jazz Heart is a vining, indeterminate variety, that produces heavily.