Motherlove, I was just being facetious saying use Vegemite instead. I was born in Australia and was brought up on it. I think it's much nicer, but Marmite will do me if there is no Vegemite!
My staple diet when I was a toddler was vegemite sandwiches and orange juice.
My mum tried to get me to eat other things by refusing me the vegemite sandwiches but my gran used to make me them on the sly (she lived with us at the time cos my mum had her fourth baby 15mths after me so gran came to help )