Authentic Chicken Shawarma with Garlic Sauce

• 1 cup garlic cloves, peeled
• 1 teaspoon salt
• 1½ cups vegetable oil
• ¼ cup lemon juice
• 2–3 tablespoons cold water (optional, to thin if needed)

For Serving:

• Pita or flatbread
• Sliced cucumbers, tomatoes, onions, lettuce
• Pickles (optional)