I'm not entirely sure because I'm gathering quality feedback survey results, and I haven't gotten to the point where I've made the first sale just yet, but for right now I would estimate maybe 20 cups of butter every month. I'm actually comfortable with growing with a smaller business. I also don't know how the business legal structures are like in El Salvador, but if they have the ability to register as corperations and can legally sell stock, maybe I'd even be interested in investing in said smaller businesses to help them scale.
You can def come and sell products you make without having to make a formal company. You can do what in other countries would be called a 'sole-proprietorship'.