West African Bean Stew

Name: West African Bean Stew
Prep time: 1 h
Cook time: 30 min
Total time: 1 h 30 min
Cuisine: African
Ingredients: 500 g dried black-eyed peas - approximately 1 pound, or 4 14.5 ounce canned beans; ¾ cup palm oil; 1 medium onion (sliced); 1 thumb-sized piece of ginger (finely minced or crushed); 4-6 cloves garlic (finely minced or crushed); 6-8 blended tomatoes (or one 14.5 ounce canned tomatoes); 1 cube shrimp seasoning ((optional)); ¾ tsp salt ((or more, to taste)); 1 tsp chili powder; 1-3 scotch bonnet peppers; 1 tsp all-purpose seasoning cube; ½ can mackerel in oil, drained (approximately 200g or 7.25 ounces (optional))