The single highest source of protein as a snack with meat depends on the type and amount of meat you choose. However, based on the search results, some of the top contenders are:

• Jerky: This is meat that has been trimmed of fat, cut into strips, and dried. It’s very high in protein — for example, beef jerky contains an impressive 9 grams (g) of protein per ounce (28 g) ¹. You can also find jerky made from chicken, turkey, and salmon.
• Canned fish and seafood: These are cooked and ready to eat sources of protein that are low in carbs and high in omega-3 fatty acids. For example, tuna provides 10 g of protein in 2 ounces (60 g) ². You can also try sardines, crab, or shrimp.
• Poultry: Chicken and turkey are lean meats that are high in protein and low in fat. For example, chicken breast provides 26 g of protein in 3 ounces (85 g) ³. You can eat them cold or warm, plain or with some low-carb sauces or dips.

(1) 30 High Protein Snacks That Are Healthy and Portable. https://www.healthline.com/nutrition/healthy-high-protein-snacks.

(2) 21 High Protein Snacks, Ranked - Diet Doctor. https://www.dietdoctor.com/high-protein/snacks.

(3) Which Meats Have The Most Protein (Top Protein Meat). https://foodcreeks.com/which-meats-have-the-most-protein/.

(4) A Complete List Of Meatless High-protein Foods - Piedmont. https://www.piedmont.org/living-better/meatless-high-protein-foods.