- Sausage substitutions: Use fully cooked smoked sausage, kielbasa, or smoked turkey sausage in place of andouille. Omit the red pepper flakes for a milder soup.
- Greens substitutions: Mustard greens or kale can replace the collards. Start checking them after 10–15 minutes on the stovetop, since they may soften sooner.
- Thyme substitution: Use 1 teaspoon dried thyme in place of fresh; add it with the stock.
- Serving suggestions: Serve with cornbread, crusty bread, or cooked white rice. A vinegar-based slaw pairs well with the sausage and peas.
- Storage: Refrigerate in shallow, airtight containers within 2 hours of cooking. Use within 3–4 days. Add a splash of stock or water when reheating, since the peas absorb broth as they sit.
••Freezing: Cool promptly and freeze in meal-size containers for up to 3 months, leaving room for expansion. Thaw overnight in the refrigerator and reheat gently, stirring occasionally, until hot throughout.