Over very low heat, simmer strawberries with water, covered, until starting to soften.
Remove lid, add vinegar, bay leaf, rosemary, salt and pepper. Simmer on very low until berries are very soft, about 10 - 15 minutes. Stir frequently.
While strawberries are cooking, shave some of the rind off the top of the brie. It's not necessary to remove it all. Place in an oven safe brie baking dish.
Preheat oven to 350° and place rack in the centre of the oven.
Spoon strawberry mixture over brie and spread evenly. Remove rosemary and bay leaf before topping the brie. Bake for 15 - 20 minutes until hot and bubbling at edges.
Serve warm with crackers, flatbreads or baguette slices.
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