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I'm trying to get rid of textured vegetable protein taste. I usually blend onions, mix them with pre soaked TVP and bake resulting burgers right away.

Now I'm thinking of leaving the mix of blended onions and TVP for an hour or so so that TVP is fully infused with onion flavour.

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In the fridge, an hour should not be a problem, but could still end up bitter depending on the kind of onion used. Usually, Marinades, Pestos etc. that use mashed onions and/or garlic taste best if they are made the way the name "Pesto" suggests: Cutting stuff very fine, then using a mortar and pestle.

Most explanations WHY that is the case have to with the fact that blenders tend to disintegrate cell walls with relatively rough cuts of a fast but half-sharp or blunt blade, releasing more enzymes etc. from the cell walls as opposed to from the cell contents. These are plausible, since some of the compounds in different parts of onion cells are known to actively react when the onion is disintegrated.

Also, try adding oil (which you often want in a marinade anyway. No unrefined olive oil in a blender, though - that is known to get bitter!) while mortaring or blending - this will help extract flavor compounds and probably provide some oxidation protection.


There is a well known marinade working with onions, garlic etc: Bulgogi marinade.

  • Thanks. I've been blending onions this way for several months now and I don't find them getting bitter maybe because I bake them or maybe the flavour overpowers the bitterness. – Marina Dunst Apr 30 '17 at 18:51

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