Whether it is a crisp squeeze over pan-seared sea bass, a splash of juice in a rich butter sauce, or a tray of oysters served on crushed ice with fresh wedges, citrus and fresh fish belong together. Beyond tradition, there is clear culinary science and flavor balancing behind why this pair works so brilliantly on the plate.
At
Thompson’s Seafood in historic
Holcombe Market, Tottenham (N17), master fishmonger James and the team always recommend keeping a few fresh lemons in your kitchen whenever you pick up your daily Billingsgate catch.
The Science Behind the Squeeze
- Cuts Through Richness: Oily fish like salmon, mackerel, and sardines—as well as butter-rich sauces—can feel heavy on the palate. The sharp citric acid in lemon juice cuts directly through that fat, balancing the mouthfeel and making every bite taste lighter.
- Neutralises Natural Amines: Fresh fish contains natural compounds known as amines. The citric acid in lemon converts these volatile compounds into non-volatile salts, instantly toning down any overpowering "fishy" aromas and leaving only clean, sweet ocean flavor.
- Enhances Natural Sweetness: Just like a pinch of sea salt, the natural acidity of citrus enhances the delicate, subtle sweetness of white fish fillets, scallops, and sweet king prawns.
- The "Cold-Cooking" Power of Citrus: In raw seafood preparations like ceviche, the citric acid alters the protein structure of fish without heat—denaturing the proteins so the flesh turns opaque and firm while retaining its moisture.
Best Ways to Use Citrus with Different Seafood
Preparation StyleBest Citrus UseIdeal Seafood MatchPan-Searing & RoastingDeglaze the pan with lemon juice & butterSea Bass, Cod, Hake, & Dover SoleGrilling & BBQChar halved lemons cut-side down on the grillWhole Mackerel, Sea Bream, & SquidBaking en PapilloteLayer thin slices over fillets inside parchmentSalmon, Trout, & HalibutRaw & ChilledFresh juice squeezed immediately before eatingNative Oysters, Crab Meat, & Prawn Cocktails
Fishmonger Tip: Timing Is Everything!
While lemons work wonders for flavor, always wait until right before serving to squeeze raw juice over cooked fish. Adding acid too early during the cooking process can cause delicate fish flakes to break down prematurely or turn mushy in the pan.
If you are roasting whole fish like sea bream or trout, stuff the cavity with sliced lemons, garlic cloves, and fresh herbs (like dill or thyme) so the essential oils infuse gently into the flesh from the inside out without altering the texture.
Visit Thompson’s Seafood in Holcombe Market, Tottenham
Ready to cook a fresh, citrus-infused seafood meal at home? Stop by
Thompson’s Seafood at
Holcombe Market (N17 9AA), located directly opposite Bruce Grove Station in North London. James will gladly clean, scale, and fillet your choices so they are completely ready for your pan.
Save time on busy weekdays by using our online
Click & Collect service or sending a quick message on
WhatsApp at 07368118104 to reserve your daily catches today!