Add in the garlic, jalapeño, and cumin seeds, and sauté for another minute. Pour the wine into the pan and add in the beef. Lastly, add the vinegar, black pepper, salt, chili powder, oregano, and beer to the pan, and bring the mixture to a boil. Reduce the heat and cook covered until the beef turns tender. Simmer uncovered for an hour, stirring occasionally. Garnish it with the cilantro, sour cream, and the remaining onion, and serve.