Red Meat

Eaten historically and universally by muscle-builders, red meat provides both protein and fat, which promote weight gain.

For example: Steak contains both leucine and creatine, nutrients that play a significant role in boosting muscle mass. While a person is advised to limit their intake, leaner cuts of red meat are healthier for the heart than fattier cuts.

You can find a recipe for Indian lamb curry below:
Heat the cooking oil in a pan over medium heat.
When hot, sauté the onions and drain on paper towels. Turn off heat.
In a food processor, pulse the onions tomatoes, garlic, and ginger pastes together into a smooth paste, 
Reheat the oil leftover from frying the onions and add the reserved paste. Sauté for 2 to 3 minutes.
Add the coriander, cumin, turmeric, red chili powder, and garam masala, and mix well.
Add the lamb pieces to the mixture, and stir to fully coat. Sauté until the lamb is browned well.
Cook until the lamb is tender. Season with salt to taste.