The Flavour Thesaurus documents what food scientists confirmed and great chefs had always practiced: umami compounds amplify each other synergistically — combining glutamates (from soy, tomato, parmesan) with nucleotides (from dried fish, dried mushrooms, meat) produces a perceived umami intensity greater than the sum of their parts. This synergy is the underlying science behind the flavour depth of dishes that combine multiple umami sources.
The principle that glutamate-containing ingredients (MSG, soy sauce, parmesan, tomato, miso) and nucleotide-containing ingredients (dried fish, dried mushrooms, meat, anchovies) produce synergistic umami — each amplifying the other's effect by a factor of approximately 7–8 times when combined at threshold concentrations. [VERIFY factor]
FLAVOUR THESAURUS (continued) + OTTOLENGHI SIMPLE