Maracuyá (pronounced mah-rah-koo-jah) or Passion Fruit
The passion fruit is round to oval, about the size of a grapefruit, with a soft to firm, juicy interior filled with a lot of seeds. The fruit can be eaten raw with a dash of sugar or used for making juice. The unique tropical flavor is a combination of sweet and sour, something like mango mixed with star fruit. Passion fruit flavored juices can be found fairly easily in the US.
Tomate de Árbol (Tree Tomato or Tamarillo)
Tomate de árbol is eaten by scooping the flesh from a halved fruit. It is also great for cooking by adding the pulp to chutneys, soups or stews. In Colombia the juice is very popular too - adding a little water and sugar. The pulp is tangy and a little sweet.
The lulo has orange skin and the flesh looks like a green tomato, it is tart and tangy and is almost exclusively for making juice. It has a citrus flavor sort of like a mixture between a rhubarb and a lime. It does not do well in large-scale cultivation so that is probably why it is not seen much or exported. A special drink in Cali is the Lulada which is made from the pulp of the lulo, mixed with water, sugar and ice cubes.