Tofu is food that you can buy from most shops in Fable, Fable II, and Fable Anniversary. If you eat it, it will give you good points. This food will not affect your weight unlike some other foods. In Fable II you will also gain purity points, the amount depending on the quality. In Fable III it's a bit more rare, you can buy it from the food shop at the Eco-Warrior Settlement in Mourningwood, and it will reduce your weight.