There are several kinds of tofu. On the one hand, the so-called « regular » tofu, whose textures vary from extra-firm, firm, medium and soft, is low in FODMAPs, up to a 170 g per serving. On the other hand, silken tofu, which is mainly used in desserts, with a smooth texture that easily dissolves, is high in FODMAPs (fructans and GOS). It is not surprising that it has a high FODMAP content because it contains a lot of water (and FODMAPs are water soluble).