Preheat your oven to 120/100 C fan/gas ½ . Line two oven trays with baking paper. Rinse and dry strawberries, hull to remove leaves and stem, then using a sharp paring knife cut each strawberry into 4 or 5 even slices, depending on the size of your fruit. Arrange slices in a single layer on the oven trays. Sprinkle with sea salt. Place trays into the preheated oven and dry for two to two and a half hours, leaving the oven door slightly ajar to assist with air circulation.
Check after about one hour and carefully flip over the strawberry slices. After two hours, strawberries should be almost dry. Turn off oven and leaving the door slightly ajar, allow the strawberries to continue to dry in the cooling oven for another hour or so. Remove from trays and store in an airtight container or jar.
