Polenta Bites with Caponata or Berry Compote

Name: Polenta Bites with Caponata or Berry Compote
Prep time: 30 min
Cook time: 4 h
Total time: 4 h
Yield: 4 portions
Ingredients: 20 g unsalted butter; 300 g milk; 300 g water; 2 pinches fine sea salt; 160 g polenta; 80 g onions; 1 garlic clove; 30 g olive oil; 180 g courgettes; 180 g aubergine; 60 g celery; 180 g yellow peppers; 400 g tinned chopped tomatoes; 20 g raisins; 50 g pitted green olives; 1 Tbsp pickled capers; 20 g white wine vinegar; 10 g brown sugar; ¼ tsp fine sea salt; ½ tsp ground black pepper; 3 sprigs fresh basil leaves; 250 g frozen mixed berries; 50 - 80 g water; 5 g cornflour; 30 - 40 g caster sugar; unsalted butter