*Masa harina is a corn flour made from corn that has been soaked in lime water. It can be found in most large super markets in the flour aisle.
**Aji amarillo paste is a Peruvian hot yellow pepper paste. You can find it in specialty stores in their Hispanic foods aisle or online.
***Queso fresco is a creamy, soft and unaged Mexican cheese. Most super markets carry it in the cheese aisle.