All of those names refer to the same traditional ingredient — a type of caramelized milk that's indispensable in homemade and industrial Latin American confectionery.
The aroma is reminiscent of powdered milk, caramel, burnt sugar, resin, fresh coniferous wood, spruce-tip syrup, smoke, black tea with milk and herb sweets.
Leading up to the occasion, people have been talking about the milk caramel on Twitter, using all the different names this sweet ingredient is known by:
La molesto tanto, y prometí no hacerlogv2019 gv2019