Summarize the following:
MSM is found in protein sources including eggs, fish, poultry, and legumes. Most health organizations recommend eating 0.8 grams of protein per kilogram you weigh, or about a third as many grams as your weight in pounds.  For example, if you weigh 140 pounds (64 kg), your recommended protein intake is 53 grams per day. A 3 ounce (85 g) serving of tuna, salmon, or trout counts as 21 grams of protein. A 3 ounce (85 g) serving of poultry counts as 19 grams of protein, and 1 egg counts as 6 grams. The healthiest way to add extra protein to your diet is to eat more legumes, such as beans or peanuts. Additionally, go for lean cuts of fish and poultry instead of fattier red meats. While garlic and onion contain MSM and other sulfuric compounds, they're most often consumed cooked instead of raw. Since MSM breaks down during the cooking process, try adding raw onion and garlic to salads and dressings. Fruits and veggies are, in general, good sources of sulfuric compounds such as MSM. Leafy greens and cruciferous vegetables (such as cabbage) are especially good choices. Leafy green and other fruits and vegetables also contain vitamins and minerals that promote healthy hair, skin, and nails. Cooking breaks down MSM, so you don't get as much from cooked foods as raw foods. While cooked foods still provide MSM and other beneficial sulfuric compounds, try to eat MSM sources raw if there's no risk of foodborne illness. For example, snack on unsalted peanuts or have kale salads with chopped onions and grated garlic.

Summary:
Eat plenty of protein-rich foods. Go for garlic and onions. Add more Brussels sprouts, cabbage, and kale to your diet. Eat foods that contain MSM raw, if possible.