Possibly something I liked myself, such as The Heroes of Asgard, by Annie Keary. You can get it as a book or see bits here.
 IN the beginning of ages there lived a cow, whose breath was sweet, and whose milk was bitter. This cow was called Audhumla, and she lived all by herself on a frosty, misty plain, where there was nothing to be seen but heaps of snow and ice piled strangely over one another. Far away to the north it was night, far away to the south it was day; but all around where Audhumla lay a cold, grey twilight reigned. By-and-by a giant came out of the dark north, and lay down upon the ice near  Audhumla. “You must let me drink of your milk,” said the giant to the cow; and though her milk was bitter, he liked it well, and for him it was certainly good enough.