Seasoning in layers means adding salt and flavouring at multiple stages throughout the cooking process rather than dumping it all in at the end. Each addition serves a different purpose: early salt penetrates proteins and draws moisture for browning. Mid-cook salt seasons the aromatic base as it builds. Late salt fine-tunes the sauce. Finishing salt adds textural contrast on the plate. A dish seasoned only at the end tastes salty on the surface but flat and muted underneath — like putting lipstick on a skeleton. A dish seasoned at every stage tastes seasoned to its bones.
Quality hierarchy: 1) Salt at the sear — when you season protein before searing, the salt draws a thin film of moisture to the surface, which dissolves the salt, which then interacts with surface proteins during the Maillard reaction to produce specific flavour compounds that unseasoned browning cannot create. A seared steak that was salted produces a measurably more complex crust than one salted after cooking. 2) Salt in the base — when onions, garlic, and aromatics are sweating in fat, a pinch of salt draws out their moisture faster and accelerates the breakdown from raw and harsh to sweet and mellow. A soffritto with salt cooks in 10 minutes. Without salt: 15. 3) Salt in the sauce with CAUTION — if the sauce will reduce, under-season at this stage. The salt concentrates along with everything else. A sauce that tastes perfect before reduction tastes over-salted after. 4) Acid as the secret weapon — when a dish tastes flat but seems salty enough, it almost always needs ACID, not more salt. A squeeze of lemon, a splash of vinegar, a spoonful of yogurt. Acid lifts flavour the way salt deepens it. The two work as partners, not substitutes. 5) Finishing salt — flaky salt (Maldon, fleur de sel) added at the plate provides a textural burst and a bright hit of salinity that disappears in cooking. It's not the same as cooking salt. The crunch, the dissolve, the momentary intensity — that's a sensory experience that dissolved salt in a sauce cannot provide. 6) Tasting frequency — this is NON-NEGOTIABLE. The biggest difference between professional and home cooking is how many times the food was tasted and adjusted. A professional tastes at every stage. A home cook tastes at the end and hopes for the best.
The flat-dish diagnostic: if a dish tastes good but not great, work through this checklist in order. Does it need more salt? (taste and evaluate). Does it need acid? (squeeze a few drops of lemon on one spoonful and taste). Does it need fat? (a knob of cold butter stirred in adds gloss and rounds sharp edges). Does it need heat? (a pinch of chilli flake or a few grinds of black pepper). Does it need freshness? (torn herbs, a grating of citrus zest). In my experience, the answer is acid 60% of the time, salt 25% of the time, and something else 15%. For finishing salt specifically: it goes on steak, on chocolate desserts, on roasted vegetables, on avocado toast, on fresh tomatoes — any dish where the salt crystal can sit on the surface and deliver its crunch before dissolving. It does NOT go into soups, sauces, or anything liquid where it dissolves instantly and loses its point.
Seasoning only at the end — the most common home cooking mistake. The surface is salty, the interior is bland. Over-seasoning before a long reduction — the sauce concentrates and becomes inedibly salty. A braise that starts with a cup of perfectly seasoned liquid becomes half a cup of twice-salted liquid. Not tasting throughout — if you're not tasting every 10 minutes during active cooking, you're guessing. Forgetting acid as a finishing tool — 'it needs something' almost always means it needs a squeeze of lemon. Using only one type of salt for everything — fine salt for cooking, flaky salt for finishing. They dissolve at different rates and provide different sensory experiences. Adding finishing salt to a sauce — it just dissolves. Finishing salt goes on dry surfaces where it can sit and crunch.