Kielbasa has long been a favorite sausage for meals and appetizers, and it's an excellent protein choice for the crockpot. Kielbasa is sometimes called polish sausage, and it is available in most grocery stores. Smoked kielbasa is the most common variety, and available in most markets. You might find uncured and fresh kielbasa in stores that specialize in polish or eastern european food. This is a simple and budget-friendly recipe for kielbasa, slow-cooked with pineapple chunks and a tangy vinegar and brown sugar sauce. Use smoked (or uncured) pork, turkey, or beef kielbasa in this recipe. Feel free to add about 1/2 cup of thinly sliced carrot or chunks of celery to the slow cooker along with the bell pepper. Or cut up an extra red or orange bell pepper. For a spicier sauce mixture, add a teaspoon or more of asian chili sauce (sambal oelek) or add a small minced hot chili pepper. Serve the kielbasa, pineapple, and vegetables with hot boiled rice. Add a side of asian slaw for a fabulous dinner.