Flavour ingredient. Present in coffee, calamus, matsutake mushroom (Tricholoma matsutake), pumpkin, malt, peated malt, Bourbon vanilla, Lamb's lettuce, pimento leaf and various fruits, e.g. apple, apricot, sweet cherry, morello cherry, orange, grapefruit, Chinese quince and a common consit of essential oils Furfural is an organic compound derived from a variety of agricultural byproducts, including corncobs, oat, wheat bran, and sawdust. (Wikipedia)

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