This suggests that eating this fruit might help you absorb only a part of the fat you eat. The fruits look like oblong, miniature tangelos. Kumquat trees purchased from nurseries and garden centers have been grafted onto root-stock which is bred to be disease-resistant. The thickness of the rind can vary somewhat, and the fruit usually has 2-6 seeds. The seeds are not poisonous, but they have the same bitter taste as orange seeds. These can be eaten whole. For a comprehensive collection of recipes using kumquat fruit, see Kumquat Growers. You can easily spit the seeds out as you eat instead, or even chew them up if you don't mind the flavor. This means you want to ensure that your kumquats are clean and blemish-free. If you’re lucky, the seeds will be large and easy to pick out, though there are often small, thin seeds that are a little trickier to extract. Limequat: A cross between key lime and a kumquat. Mandarinquat: The Mandarinquat is a cross between a kumquat and a mandarin. Yes you can grow a kumquat tree from seed, however, the fruit will not be reliable. Like a kumquat, they can be eaten whole. Remove the seeds (optional). Pull off the nubs of green stems as well. The seeds are not poisonous, but they have the same bitter taste as orange seeds. If you're feeling dainty, slice the kumquat in half and pluck out the seeds. If you're feeling dainty, slice the kumquat in half and pluck out the seeds. You can easily spit the seeds out as you eat instead, or even chew them up if you don't mind the flavor. Additionally, kumquats’ flavonoid poncirin prevented fat cells from maturing [ 54 , 44 ]. However, the rind is a bit crunchy, and the seeds are larger. Extremely sour with a slight, salty tang. Can You Grow A Kumquat Tree From Seed.