Having brewed two batches of Ruby at one of the McMenamins breweries, I can say for certain that the beer is racked on top of the raspberry puree, the fruit does not get put in the boil. They use the aseptic Red Raspberry puree from Oregon Fruit (available to homebrewers here). The mash bill is 2-row, wheat, and a little bit of crystal - I don't remember the exact proportions. IIRC, there's only a bittering hop addition (the previously-mentioned Chinooks, which seems to be the universal bittering hop for most of the McMenamins beers). A single-infusion mash - 150F, recirculated for 40min before pumping over to the brew kettle for the 60-min boil.
Oh, and it's a lot of work! While the pump over to the kettle is happening, you're kegging another beer to make room in the fermenter for the new batch, and cleaning the fermenter, and getting ready to wash returned kegs... it makes me tired again just thinking about it!
Any clue on the proportion for the puree?