Three flavour focaccia

INGREDIENTS

• 400 g strong white bread flour, plus extra for dusting
• 100 g fine ground semolina flour or strong white bread flour
• sea salt
• 1 sachet dried yeast
• ½ tablespoon golden caster sugar
• 300 ml water, lukewarm
• olive oil
• extra virgin olive oil
• 2 red onions, finely sliced
• a few sprigs of fresh thyme, leaves picked
• 2 tablespoons olive oil
• 6 tablespoons balsamic vinegar
• 1 bunch fresh basil, leaves picked
• 1 large handful ripe cherry tomatoes, halved
• freshly ground black pepper
• white wine vinegar
• 2 cloves garlic, peeled and sliced
• 30 g Taleggio cheese
• 1 small log goat's cheese
• 1 handful Parmesan cheese, grated
• 1 sprig of fresh rosemary, leaves picked