William of Malmesbury relates
" When Wulstan was committed to Hawkesbury he was then barely come to manhood, yet he did not give thought to the pleasures of the world as a young man might; meanwhile he did not altogether refuse savoury meats and one day he ordered a goose to be roasted.
The fowl was spitted and roasting, carefully tended by the scullion and in the heat of the fire the dripping began to run from it. Some of the servants were putting hot coals under, others were making ready the sauce. The savoury smell made their mouths water and they could not refrain from saying how good it was. Even Wulfstan was ensnared and his soul melted in delight, as it was foretasting the goose and the table was all but laid. It was now that he and his steward were called forth from the house on a business which came untimely but could not be delayed. So he went empty away and began to find fault in his lust of a moment. How weak the was the flesh that could be so tempted to evil."
The pleasure passed quickly but the sin remained. He exacted from himself this penalty: that he should pay for the inordinate desire of one hour by perpetual abstinence. He made a vow and kept it, that he would never again eat that kind of food.
And so Wulfstan came to be patron saint of vegetarians.