Р107
МОЛОЧНЫЕ РЕКИ И КИСЕЛЬНЫЕ БЕРЕГАМОЛОЧНЫЕ РЕКИ, КИСЕЛЬНЫЕ БЕРЕГА
folk poetNPpl only
fixed WO an idyllic place or a life of ease and plenty in such a place: (life in) a (the) land of milk and honey
(life in) a land flowing with milk and honey.
The phrase often occurs in Russian folk tales.