Pork & caramelised onion sausages

pork 80.0% , red onion 6.0% , water 6.5% , pea flour 4.8% , white onion 3.2% , brown sugar 2.3% , red wine 1.7% , chives 1.3% , salt 1.1% , white wine vinegar 0.9% , rapeseed oil 0.7% , E451 0.6% , muscovado 0.5% , balsamic vinegar 0.3% , corn flour 0.3% , garlic 0.3% , E223 0.2% , black pepper 0.2% , garlic puree 0.2% , concentrated lemon juice 0.1%