“Red wine with red meat, white wine with fish” is one of the standard and well known wine pairing rules and Japanese scientists has found ‘evidence’ to back this rule.
Scientists in Japan have claimed that the unpleasant, fishy aftertaste noticeable when consuming red wine with fish results from naturally occurring iron in red wine.
Takayuki Tamura and colleagues note that wine connoisseurs established the rule of thumb because of the flavour clash between red wine and fish. They point out, however, that there are exceptions to the rule, with some red wines actually going well with seafood. Until now, nobody could consistently predict which wines might trigger a fishy aftertaste because of the lack of knowledge about its cause.
The scientists asked wine tasters to sample 38 red wines and 26 white wines while dining on scallops. Some of the wines contained small amounts of iron, which varied by country of origin, variety, and vintage.
They found that wines with high amounts of iron had a more intensely fishy aftertaste. This fishy taste diminished, on the other hand, when the researchers added a substance that binds up iron.
The findings indicate that iron is the key factor in the fishy aftertaste of wine-seafood pairings, the researchers say, suggesting that low-iron red wines might be a good match with seafood.