To make the aioli, peel garlic and minic until pureed and stir into mayonnaise.

Cut the baguette into 4 piece and split each piece lengthwise. Spread each piece lengthwive. Spread each piece with the aioli, divding evenly.

Trim, wash and dry the watercress and divide between the 8 pieces of bread. Top each brad piece with sardines. Makes 4 servings.