To prepare a vidalia barbecue sauce barbeque recipe, first you need to gather your ingredients. First, you will need the following ingredients: Vidalias: Peel and cut the rinds off of the garlic cloves. Cut the onions into thin slices. Peel the stems from the chili peppers and slice them in half lengthwise. Chop the remaining ingredients into small pieces. Add the chopped garlic to the saucepan and heat over medium-low heat until it starts to turn golden brown, about 5 minutes. Remove the pan from heat and add the tomatoes. Cook, stirring occasionally, until they begin to soften and the sauce thickens, 2 to 3 minutes, then stir in the tomato paste. Season with salt and pepper to taste. Serve with sour cream and guacamole.