Heat oil in a large pan over medium heat. Once shimmering, add the spinach (11 ounces). You'll probably need to do this in batches, I find using tongs to fold the spinach as it cooks is the easiest way to do this. Add fresh spinach and continue to fold in.
Once the spinach is completely wilted, add the salt (1/2 teaspoon), pepper (1/4 teaspoon), and garlic (2 cloves). Continue to saute until the garlic becomes fragrant--1-2 minutes. Remove from heat, eat immediately, and enjoy.