Carl Linnaeus, The Lapland Journey, translated by Peter Graves (Edinburgh: Lockharton Press, 1995), p. 52.
Ã…ngermanland, 21/05/1732, ¶185:
The country folk reckoned this to be one of the greatest delicacies for, they claim, it is refreshing and thirst quenching and can also be mixed with other things. When eaten, it runs or is drawn back into the dish unless it is trapped against the edge of a spoon with a knife, or, more usually, a finger. And yet the ague seems to be quite rare in these districts, which ought not to be the case if it was caused by sourmilk. So sourmilk does not cause anything very pernicious. When a little of this sort of milk is mixed into the bread mentioned above, the latter becomes much chewier.