Being cool in Hyde Park has always been important, and I'm talking attitude here, not temperature. Mellow Yellow is cool, as the name implies.
Of course using a '60s song by Donavan as your restaurant title gives away the target market for this place: Hyde Park boomers. They are found in abundance here, in addition to younger folk.
The place is known for its chili, and deservedly. Especially in cold weather, it is a treat. They have several varieties, all good. They also make some righteous crepes.
Check 'em out.