How can you tell the difference between a loquat and a kumquat?

Answer 1

A loquat and a kumquat are, indeed, similar in size and color, although there are differences in shape and texture.

The loquat skin is a sort of bright yellow, which gets darker -- almost orange -- when it is ripe. It is almost pear-shaped, with the bottom part wider than the top part. Its skin is covered in a very thin layer of smooth dust-like "fur." Inside, there are slippery brown (non-edible) seeds, about 1 cm in length.

The kumquat is bright orange in color. It is about 4-5 cm in length, and about half of that in width. It has almost an oval shape. It is a member of the citrus family, so the skin has a almost leather-like look, similar to an orange/lemon/grapefruit.

=== ===