Earlier this year, Del Taco became the first major fast food chain to serve Beyond Meat on their menus with a test launch in Los Angeles. It seems like those tests have been going well, as the Beyond Meat menu is expanding to the rest of SoCal.

Photo courtesy of Del Taco

In total, 16 locations in San Diego, plus another three in Orange, Riverside, and San Bernardino Counties, will now have the option to put the plant-based protein into their meal. You can swap out any meat for the vegan option in burritos, tacos, or bowls, or get one of the two Beyond Tacos crafted specifically for the protein. There's a vegetarian Beyond Meat Taco with cheddar cheese and a vegan Beyond Avocado Taco as well.

This brings the total number of Del Taco locations selling Beyond Meat to 21, which is still a small number compared to the chain's 570-plus total. Nonetheless, the fact that the test market effectively tripled after just three months is promising, and there's always a chance that one day, that plant-based option will be available at all locations.

As fast food giants look at their own menus for potential plant-based additions, Del Taco's partnership with Beyond Meat is definitely one to keep an eye on, especially given on the favorable feedback and success.