Cantonese XO Sauce Making

Overview

XO sauce: invented in Hong Kong's Peninsula Hotel in the 1980s — the most luxurious Chinese condiment. Made from dried scallops (conpoy), dried shrimp, Jinhua ham, dried chili, shallots, garlic, and oil, slow-fried together until crispy and deeply fragrant. The name borrows the cognac grade 'XO' (Extra Old) to signal luxury. Applied as a finishing condiment or stir-fry sauce.

Flavour Context

Intensely umami, concentrated seafood depth, spicy, savoury — the most complex Chinese condiment ever created

Key Principles

{"Dried scallops must be steamed and shredded fine before frying — they must be soft enough to fry crispy","Slow fry in neutral oil at low heat — every ingredient must reach golden-crispy without burning","The oil itself becomes flavoured — it is part of the sauce","Final seasoning with oyster sauce and a small amount of soy — the dried ingredients provide most of the saltiness"}

Pro Tips

{"The sauce keeps refrigerated for 3 months, covered with its own oil","Use as a finishing condiment for steamed scallops, stir-fried greens, noodles, or congee","The best homemade XO is made with Grade 1 dried scallops — the expense is justified given how long it lasts"}

Common Mistakes

{"High heat — dried seafood burns before other ingredients are cooked","Under-frying — the sauce must be intensely fragrant and crispy, not soft and oily","Using cheap dried scallops — the quality directly determines the sauce's depth"}

Source

Land of Fish and Rice — Fuchsia Dunlop

Cross-Cuisine Parallels

• Italian bottarga (intensely savoury seafood condiment)
• Japanese mentaiko (spicy cod roe condiment)
• Southeast Asian belacan (fermented shrimp paste)