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