You can slice and mix the strawberries up to a day in advance if you like, and store covered in the fridge (or at room temperature for a few hours depending on the day). It's best to whip the cream right before serving.u003cbr/u003eu003cbr/u003eIf you have leftovers, store strawberries and cream in separate airtight containers in the fridge for up to two or three days. You can rewhip the cream to stiffen it up a bit before serving.