Liousy,
There is a historical anecdote. In 1720 Peter I was in Holland and he's at lunch filed exotic cheese with the big holes. Peter first lost his temper: "What's you me cheese, mice, spoiled, served?". However, a new delicacy loved the king and he decided to invite Russia a dozen cheese makers. New cheese, welded Dutch masters, quickly caught on in Russia and I used to go along with rubles.