Am making a veggie stew (six portions) for tea tonight. Ingredients: 1 onion, 2 sticks celery, 3 tbsp flour, 1 tbsp marmite, 1 tbsp tomato purée, 2l vegetable stock, 3 carrots, 4 parsnips, 1/2 swede, 3 sweet potatoes, 150g orzo pasta.
I don't know how to work out the calories. Would you weigh everything out?