Step 1

Combine all ingredients in a large pot. Add enough water to cover everything by 2 inches. Bring the pot almost to a boil then reduce heat so that the water is just barely simmering. Simmer, uncovered, for 30 minutes.

Step 2

Remove the pot from the heat then skim off the impurities (the white foamy stuff) from the pot with a spoon.

Step 3

Strain stock first through a large strainer, such as a colander, to remove the prawns and veggies. Next, strain the stock a second time through a fine-mesh sieve.

Step 4

Let stock cool completely then store it in jars in your fridge for up to 3 days or in resealable bags in your freezer for up to a year.