It's really quite simple:
4 carrots, trimmed, scrubbed & cut into large pieces
3 celery ribs, cut into 1/2-inch pieces
1 leek, white part only, sliced
1 small onion, peeled & quartered
10 sun-dried tomato halves
1 1/2 cups cremini mushrooms (caps & stems), cleaned & quartered
2 cloves garlic
generous handful of fresh parsley, including stems
7 ounces salt
1 teaspoon black peppercorns
Add all ingredients to the bowl of a food processor and pulse until it forms a wet paste and is well combined. I added half the ingredients and mixed until I had the right consistency, then added the remainder.
Store in an airtight container in the refrigerator, or separate into smaller portions to store in the freezer.
To use, combine one measured teaspoon with one cup boiling water.
Jennifer reminds us:
Yes, this recipe really does need 7 ounces of salt. Remember, you're curing the vegetables, and the salt ensures they do not go rancid.