For the mushrooms: Combine the water, oil, vinegar, garlic, bay leaves, cloves, peppercorns, salt and sugar in a large saute pan over medium-high heat; once the mixture comes to a boil, cook for 5 minutes, stirring occasionally. Stir in the mushrooms; once the mixture is boiling again, cook for 2 minutes. Transfer to a heatproof container; cool, then cover and refrigerate overnight.