the size of the berries that you have available. if you have unusually small berries, add in a few more. if yours are unusually large, try to distribute them with a bit more space between them.
this dessert must be made with fresh strawberries. frozen strawberries will not only leak a lot of extra liquid into your dish as they bake, but they simply won’t look as attractive after they come out of the oven. save this dessert for the summer time, when you have plenty of perfectly ripe berries available to you. i serve this either slightly warm or well-chilled. after slicing, i top each piece with a bit of 