Vegetable profile
About onions and onion puree
Onion (Allium cepa) is a bulb vegetable used globally as a foundational flavor ingredient. Commercial onions may be broadly grouped as yellow, white, red and sweet types, with differences in dry matter, pungency, sugar content, color and cooked flavor.
The bulb is formed from layered fleshy scales. When onion tissue is cut or crushed, naturally occurring sulfur-containing compounds and enzymes interact and rapidly generate the characteristic sharp onion aroma. Cooking changes this profile substantially, reducing raw pungency and developing sweeter, softer and more rounded savory notes.
Industrial onion puree is generally produced from peeled and trimmed bulbs that are washed, size-reduced and refined. Depending on the product, the onion may be processed as a raw-style puree, blanched or cooked before final packing. The processing route should be confirmed because it has a direct effect on pungency, sweetness, color and finished-product flavor.