Black beans and rice with mojo marinated onions

I'm not one normally for vegetarian meals, but this is one I like: black beans and rice with sliced raw onion marinated in mojo, which requires:

1/3 cup olive oil
1 orange
1 lime
1 lemon
4 garlic cloves chopped
ground cumin
oregano

To make the marinade, I heated up the olive oil over medium heat and cooked the garlic about 90 seconds. I wouldn't even call it cooking, just trying to extract some of the flavor. I then combined the oil with the juice of one orange, one lemon and one lime and mixed in the cumin and oregano and let the onions marinate in there a couple hours. The marinade takes some of the punch out of the raw onion aspect, and I then just topped them over some black beans and rice, and garnished with a fair bit of fresh cilantro. The extra marinade is good for pork chops as well, which I think work best grilled, and from experience I do not recommend marinating the chops excessively -- just a couple of hours.