| Preheat the oven to 350 F.
Rinse the shrimp shells, spread them out on a sheet
pan, and bake for 15 minutes, until pink and slightly
charred around the edges.Coat a stockpot with the oil
and place over medium heat. Add the vegetables and cook
for 5 minutes to soften. Add the tomato paste, stirring
to coat the vegetables. Pour in the wine and stir for
1 minute, until reduced slightly.
Add the roasted shrimp shells, herbs and spices. Pour
in only enough cold water to cover (about 2 quarts);
too much will make the stock taste weak. Allow it to
slowly come to a boil, then lower the heat and slightly
simmer for 45 minutes, uncovered, skimming any impurities
that rise to the surface.
Strain the stock through a fine sieve into a heatproof
container or another pot to remove the solids. Cool
to room temperature, then cover and refrigerate. The
stock keeps for up to a week refrigerated.
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