Sundried Tomato and Olive Pasta Sauce – Instant Pot New Zealand

Ingredients

• 4 tbsp olive oil
• 1 big white onion
• 5 big garlic cloves
• 500 g fresh tomatoes
• 100 g sundried tomatoes
• 400 g can chopped or plum tomatoes
• 40 g kalamata olives
• 1 tbsp mixed herbs
• 1 tsp sugar
• 1/2 tbsp freshly ground black pepper
• Salt
• 1 tbsp red chilli flakes
• 250 ml vegetable stock