"요리" is cuisine and "음식" is food. However, they can be verbs that have different meaning. You can use "요리" as a verb adding "-하다" at the end. So it becomes "to cook". "I cook for lunch." = 나는 점심을 요리한다. However, you can't make "음식" as a verb for "to cook". You can make a verb for " to eat food" adding "-을 먹다" at the end. "나는 어제 맛있는 음식을 먹었다." =Yesterday, I ate some delicious food.

음식 means general food 요리 means cooking 요리 also means food as a result of cooking(요리한 음식)