Blend mayonnaise, milk, garlic powder, and pepper until smooth and creamy. Season with salt to taste. Refrigerate until ready to use.
To make salad:
Fry bacon in a large, deep skillet over medium-high heat. Turn frequently until evenly browned. Drain on paper towels and crumble.
In a large bowl combine sorghum, lettuce, mixed greens, tomatoes, parsley, green onions, and bacon. Season with salt and pepper to taste; toss with dressing. If desired, top with Parmesan or goat cheese. Makes 4 to 6 servings.