Add the next 10 ingredients (to black pepper). Caribbean food is very flavourful, and most cooks don't measure, so amounts are approximate. Basically, add seasonings until you think it's too much, then add more (be careful with the salt, though). You'll know you have it right when the seasonings smell delicious and you can't smell the raw meat. Add ketchup and mix. Allow meat to marinate in the fridge for several hours to overnight.