Mace is the seed coat of the nutmeg (mace flower). When ground, it is used as a spice in the kitchen and has an aromatic, resinous, slightly bitter taste.
The raw kumquat (mini orange, dwarf orange) has a certain sweetness and tastes slightly bitter. Prefer organic, as it is edible with the peel and seeds.
Chinese water chestnuts taste sweet and are still crunchy even when cooked. Due to possible parasites, they can only be eaten raw and if washed well. Organic?
The wax gourd, also known as winter melon, is grown mainly in Asia and Florida. It is used raw as a vegetable (organic?) or, for example, as winter melon soup.
Organic sauerkraut (sauerkraut) is white cabbage (Brassica oleracea) fermented with the help of lactic acid bacteria and pasteurized at a minimum of 60 °C.