This how I make my salsas being on a trailer.
The volcanic molcajete is a Mexican traditional stone tool to grind spices or chiles to make salsas, guacamole.
The rough surface of the basalt stone creates a superb grinding surface that maintains itself over time as tiny bubbles.
Salsas and guacamole prepared in molcajetes are known to have a distinctive texture, also carry a subtle difference in flavor, from those that are prepared in kitchen blenders. Molcajetes can also be used as a cooking tool, where it is heated to a high temperature using an open fire or hot coals, and then used to heat its food contents.