Cherry, rose & pistachio Pavlova traybake

Take this retro meringue dessert to another level by adding edible flower petals, coconut cream, fruit and nuts for even more texture

5 large egg whites
250g white caster sugar
1 tsp white wine vinegar
1 tsp cornflour
200ml double cream
150ml coconut yogurt
1-2 tsp rose water
250g cherries, halved and stoned, plus a few with stems on to decorate
100g shelled pistachios, roughly chopped
edible rose petals, to decorate - if buying, make sure they are organic, or if you want to use from your own garden, make sure they are unsprayed (optional)

Heat oven to 140C/120C fan/gas 1. Line a large, flat baking tray with baking parchment. Place the egg whites in a large, grease-free bowl with a pinch of salt. Using clean, electric beaters, whisk until the eggs hold soft peaks. Add the sugar, 1 tbsp at a time, whisking well between each addition, until the meringue is thick and glossy, and will hold up in stiff peaks on the end of the beaters. Add the vinegar and cornflour and whisk again until combined. Using a large spoon, pile the meringue onto your baking tray, then spread to a rectangle, roughly A4 size. Use the back of the spoon to make peaks and dips in the meringue to create an attractive texture. Bake in the centre of the oven for 1 hr 20 mins, then turn off the oven and leave the Pavlova inside to cool overnight.
Just before serving, assemble the Pavlova. Very softly whip the cream, then fold through the coconut yogurt and rose water. Remove the Pavlova from the baking parchment and place on a large serving plate or board. Dollop the coconut cream on top, then top with the cherries, and scatter over the pistachios and rose petals, if using. Serve straight away.