Students made tostones or patacones (plantain chips) to taste in class, which are a very popular snack in Spanish-speaking countries. If you would like to make this delicious snack at home, HERE is a recipe. Another way to prepare them is for breakfast, as mangú (eaten especially in the Dominican Republic)–recipe HERE. See below for the etymological origin of this word and a fun story.
“The origin of mangú started back in 1916 when the Americans invaded the Dominican Republic; afterwards, the soldiers would go into town. Then one day, one of the soldiers wanted to taste some of the mashed plantains he saw the locals eat. When he tasted it, he said ‘Man, this is good’ and pointing at it, he said in short ‘man good!’. The locals thought that the name of the mashed plantains in English was mangú.” (Source)