Slice the chorizo into 1/4 inch slices

Add the chroizo to a cold medium pot

Turn the heat to medium and saute the chroizo for 5 minutes to render some of the fat

Add optional chopped onion if using

Slice the garlic and add it to the pot. Saute for 30 seconds

Add the diced tomatoes, tomato sauce and chicken stock

Add optional kale and roasted red pepper if using

Simmer for 10 minutes

Add the shrimp and simmer until the shrimp turns pink and curls up, about 5 minutes

Season with salt, pepper and red chili flakes to taste