medium carrots, peeled, celery, large onion, peeled, medium potato, peeled, small parsnip, peeled, medium leek, small courgette, cut in half lengthways, a small spring cabbage or, more authentically, cavolo nero, chopped into 1 cm pieces, green beans, cut into 1 cm lengths, fresh peas, or frozen if fresh aren’t available, coarsely chopped flat leaf parsley, × 400 g can of borlotti, haricot, or flageolet beans (your choice), drained and rinsed