David Quidnunc • Link
"Famous for its cheesecakes"
according to a note at L&M for 23 June 1661 (Vol. II, p. 125).
On 1 April 1663, Pepys calls it the "cheese-cake house" (L&M renders it "Chescake-house").
Cheesecakes of some sort have a long history. This site claims they were known in Ancient Greece:
The ancient Romans had them, and various cultures make a similar dessert in various ways, according to this site:
And in 17th-century England, of course they had cheese cake recipes, such as this one:
Interesting parallel, of a sort: In the U.S. today, there's a nationwide chain of restaurants called "The Cheesecake Factory" begun by a couple with a great cheesecake recipe in Los Angeles, which confirms (just as Pepys does) that the cheesecake is a strong foundation on which to build an eatery's reputation.