Hudson Valley and North Midland U.S.. clabber.
Regional variation note
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for thick milk
Historical Examples of thick milk
There I went in and ordered a supper; but they had nothing but thick-milk and kalte-schade.Arthur O'Leary
Charles James Lever