so, it's either something specific...or it's too much fibre at once. and, that is something that happens when you eat too much fibre.
the meal has 55 g of pasta, 110 g of carrots, 82 g of beets and 175 g of red peppers. the root vegetables are particularly compact and probably the culprit, if it's fibre.
but, i don't know, really.
i should start next time by eating one component of the meal at a time and seeing how i react to each one, and stopping when or if i get sick again.