Boil2 cups of water on high heat in a large saucepan.
Then, add in barley and lower heat to medium
Cover your pan and allow to simmer for 45 minutes, or until the barley's cooked and tender.
Pour 1 1/2 cups of water in another saucepan, and then add in the rice.
Lower the heat and simmer well covered for about 20 minutes, or until the rice is cooked and tender.
Allow the barley and rice to cool and then combine them in a large bowl, along with corn, kidney beans, onions, cilantro, and red bell pepper.
Make a dressing for your salad in another bowl by whisking together garlic, salt, red pepper flakes, black pepper, vinegar, and chili powder.
Add in oil and pour over your rice and barley.
Line a separate bowl with lettuce and transfer your mixture to that bowl.