This aptly named tomato variety is sure to be your pride and joy. As its name suggests, Chocolate Heartthrob tomatoes are heart-shaped and chocolate brown shot through with peppermint-green stripes. The fruits average a respectable 200 grams on average and the medley of colours looks gorgeous when you slice through the fruits. As for the flavour, it strikes a classic balance between sweetness and tartness making it an all-round winner. This is a dwarf tomato variety reaching 90cm to a metre in height. Open Source Seed Initiative This variety of Dwarf Tomato was bred by the Dwarf Tomato Project. All varieties from the Dwarf Tomato Project are released in the Open Source Seed Initiative (OSSI) and are sold under the following pledge: "You have the freedom to use these OSSI seeds in any way you choose. In return, you pledge not to restrict others’ use of these seeds or their derivatives by patents or other means, and to include this pledge with any transfer of these seeds or their derivatives. (OSSI website)