>> source: https://www.cooksillustrated.com/how_tos/13677-a-vegan-substitute-for-anchovies

Using #tongs{}, hold 8 by 7-inch sheet of @nori{1%8x7 sheet} 2 inches above low flame, flipping every 3 to 5 seconds, until nori is aromatic and shrinks slightly, about 20 seconds (or toast in 275°F oven). Tear sheet into 1.5 inch pieces and grind in #spice grinder{} to fine powder, about 30 seconds.

Measure out 1 teaspoon nori powder and stir into 1/4 cup @white miso{1/4%cup}. (Extra powder can be stored in airtight container at room temperature for up to 2 months.) Paste can be stored in airtight container in refrigerator for up 1 month.

To use as flavoring agent: Substitute in 1:1 ratio for minced anchovies (1 minced anchovy = 1/2 teaspoon).