01
Soy Sauce
3.31 tsp : 1/4 tsp
Adds umami and color; reduce other liquids slightly
3.3
salt substitute
in soup.
Salt in Soup builds aromatic depth that defines each spoonful. A substitute should deliver a similar warmth and intensity without overpowering.
top substitutes
adjustment for this dish
Soy sauce (1/4 tsp) joins the pot after the 25% reduction, not at the simmer start, because a 45-minute boil concentrates both its sodium and its color past balance. Stir into the finished broth body off heat, then taste and skim any final scum before serving.
02
Fish Sauce
3.31 tsp : 1/4 tsp
Very salty and savory, best in Asian dishes
3.3
adjustment for this dish
Fish sauce (1/4 tsp) can go in at the early simmer because its amines are volatile and mellow into broth depth during the 30-minute build. Add it with the aromatics after they sauté down and keep the heat at a bare simmer so no sharpness locks in to the stock.
03
Seaweed
3.31 tsp : 1 tsp
Dried kelp flakes ground; mineral saltiness
3.3
adjustment for this dish
Seaweed flakes (1 tsp) release their 8% sodium slowly as the stock simmers; add at the 15-minute mark so the flakes have time to hydrate and contribute umami depth without over-seasoning. The warm broth takes on a subtle minerality and blends cleanly after a final stir.
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04
Coconut Aminos
3.32 tsp : 1 tsp
Much milder; use double for salt equivalent
3.3
adjustment for this dish
Coconut aminos (2 tsp for 1 tsp salt) carry sugars that caramelize if added at the sauté step; hold them for the final correction after the 25% reduce-and-thicken. The finished broth body reads rounded and slightly sweet, which pairs with a bay leaf and skimmed stock.
05
Anchovy Paste
3.31/2 tsp : 1 tsp
Salty and savory; melts into sauces invisibly
3.3
adjustment for this dish
Anchovy paste (1/2 tsp) dissolves into sautéing aromatics in warm oil before the stock goes in; the fat-soluble glutamates distribute through the entire simmer and build depth that salt alone can't match. Skim after 5 minutes and reduce by 25% before the final taste.
06
Capers
3.31 tbsp : 1 tbsp
Briny and salty; chop fine to distribute
3.3
07
Worcestershire Sauce
3.31 tsp : 1 tsp
Salty-umami depth; use in marinades or stews to boost savor without using salt directly
3.3
08
Dijon Mustard
3.31/2 tsp : 1 tsp
Adds salt plus tang; works in dressings or rubs but leaves a mustard note
3.3
technique for soup
technique
Soup takes salt in three pulses — a pinch while sweating aromatics, 1/2 tsp when the stock hits the pot, and the final correction after reduction — because salinity concentrates as water boils off and front-loading ruins a pot you planned to simmer for 45 minutes. Sauté onion and carrot with a pinch of salt to pull moisture out fast and build a caramelized base, then add the broth and a bay leaf and bring to a bare simmer so the body of the soup develops depth without emulsifying fat into a cloudy stir.
Unlike stir-fry, where salt hits hot oil and is gone in 20 seconds, soup salt spends 30 or more minutes distributing through the liquid and re-seasoning every vegetable cell. Skim the scum that rises in the first 5 minutes, then reduce by 25% to thicken and concentrate.
Taste and correct salt at the very end, off heat, after a 2-minute rest so residual warmth stabilizes the flavor.
pitfalls to avoid
watch out
Don't front-load all the salt at the start of a 45-minute simmer; as water reduces, salinity concentrates and what was balanced at minute 5 is over-seasoned at minute 40.
watch out
Reduce the stock by 25% before the final salt correction so you season the finished broth body, not a dilute version that will tighten up later.
watch out
Skim the scum that rises in the first 5 minutes of simmer before adjusting salt; the foamy proteins otherwise emulsify and dull your taste of depth.
watch out
Don't salt after blending a thickened soup cold; dissolved salt reads differently in warm stock versus cool purée and you'll overshoot on the reheat.
watch out
Avoid salt bombs like bouillon cubes plus added salt; a single cube adds 2 g sodium and dominates any delicate sautéed aromatics.