Fuencaliente is famous for the wines made in its volcanic soil. The largest and oldest winery on the island is Bodegas Teneguía, with white, red and the famous Malvía sweet wines that are sold all over the island and beyond. Note that the restaurant here is exclusively for tour groups.
There is a wine shop where you can also taste (or rather drink) the wines (you pay per glass from €0.50). If you would like a tour, advance reservations are essential; the price varies according to how many are in your group.