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MORTAR & KETTLE
Apothecary of Flavor
SPICE MIX · №022

Fish Spice Mix

the fry-day rub

A toasted, golden rub built for the edge of a hot pan: earthy cumin and coriander laced with peppery heat and turmeric's warm pigment. It reads as savory and a little floral, the kind of blend that traces its bite straight back to the seeds it started as.

Easy10 minForgiving
EarthyCitrusFloralDigestiveWarming
Fish Spice Mix · finished

Method

Check off each step as you go. Your progress is saved. Amounts below already match your batch size.

Toast the coriander, cumin, fennel, and peppercorns in a dry pan until fragrant.
2 gcoriander seeds1 gcumin seeds1 gfennel seeds3 black peppercorns
2–3 min
Cool, then grind to a coarse powder.
2 gcoriander seeds1 gcumin seeds1 gfennel seeds3 black peppercorns
Stir in the allspice, paprika, turmeric, and salt.
0.2 gallspice1 gpaprika0.7 gturmeric1 gsea salt
Jar airtight; use generously as a rub for fish.
Toast, grind, and know exactly why it works.
THE MORTAR & KETTLE METHOD

The chemistry

SKELETAL STRUCTURES

4 compounds carry this recipe. Here is what each one does and, where we have it, what it actually looks like.

C₁₀H₁₂O
cuminaldehyde
C₁₀H₁₂O

Released as the cumin seeds hit the dry pan, cuminaldehyde is the earthy anchor of the blend and lends the toasted warmth that carries across the whole rub.

EarthyWarming
C₁₇H₁₉NO₃
piperine
C₁₇H₁₉NO₃

The pungent alkaloid in the toasted peppercorns, piperine supplies the sharp heat that lifts the fish off the plate and gently stokes the appetite.

WarmingDigestive
C₂₁H₂₀O₆
curcumin
C₂₁H₂₀O₆

Turmeric's golden pigment tints the ground mix and adds a bitter, earthy depth that rounds out the toasted seeds and rides along with digestion-friendly warmth.

EarthyDigestive
C₁₀H₁₈O
linalool
C₁₀H₁₈O

Carried in the coriander seed, linalool threads a soft floral-citrus lift through the earthy base, brightening the rub without cutting its savory weight.

FloralCitrus

On the table together

THE INDEX, LINKED

This recipe is part of a set: follow the thread through the blends it uses and what it's served with.

FROM THE JOURNAL

The reading behind this recipe

Nobody is actually counting the seven spices
№18Origins

Nobody is actually counting the seven spices

The practice is genuinely old and the blend is genuinely documented, in a thirteenth-century Aleppan cookbook that lists twelve ingredients including spikenard and rosebuds. The name is Ottoman, the number is a convention, and one spice in the modern jar could not have reached the Levant before 1492.

4 August 2026·12 min read·26 SOURCES
The molecule that keeps fooling the instruments
№11Chemistry

The molecule that keeps fooling the instruments

Curcumin has more than a hundred clinical trials behind it and no approved drug in front of it. Chemists now teach it as the textbook case of a compound that lies to laboratory equipment.

1 August 2026·8 min read·12 SOURCES