Lemon sole

Lemon sole is a mild flatfish that sits in the low-histamine category, though like all flatfish, its thin fillets benefit from being eaten very fresh.

• Flatfish spoils quickly — the thin, delicate nature of flatfish fillets means they have a lot of surface area relative to their mass, which allows bacterial activity to progress faster

• Distinct from Dover sole — lemon sole and Dover sole are different species, but both are similarly low in histamine when fresh; neither is typically fermented or processed in ways that raise histamine

Buying lemon sole the day you plan to cook it, rather than storing it overnight, is an easy way to keep things optimal.