Though the menu is a bit limited, you cannot argue with the view. Just watch out for the chipmunks. ;)
Favorite Dish: Oatmeal for breakfast and dried food in the form of stews for dinner. It is surprising how good simple foods taste when you are starving....lol. No, actually, they are quite good but admitedly, you might not ever eat them back in civilization!
Okay, for the ones that can't live without it.... there is a snack bar in Algonquin. The snack bar is at the Two Rivers campground, next to the little grocery store. Hahaha, I have no clue what the food tastes like here, you have to try that out yourself.... if you want of course. I rather get some groceries and make my own dinner. There are a few restaurants in the park itself, but not that many. I haven't tried any of them, so I can't give you any real advice of where to go.
Probably more of a health warning than a restaurant tip. But...
Favorite Dish: ...you know what? A greasy burger has never tasted so good after beating yourself up for 4 or 5 days in the bush! I wouldn't even dream of eating this crap otherwise. You'll absolutely LOVE chowing down on this after 4+ days of 'backpack friendly' camping food. Also, if you're a beer lover, be sure to grab some beer at "The Beer Store" down the street to help wash it down. :-)
It is just a place that is somewhat overpriced, but they do have great coffee and pie! However, it is a place to start off on a journey, or sit and have a chuckle as you watch those who really have no idea what they are doing, or simply to sit, enjoy your coffee and take in the beauty that surrounds the area.
Favorite Dish: The Strawberry Rhubarb pie was good - but I would suggest that you have it heated. The coffee is great!
Its been said by other people here, but maybe I can help reinforce it. Cook your own food! Its part of the whole experience. Take a little stove or utilise the fire pit and grill some burgers. Make sure that you filter any water you use either by using one of those neat devices you can buy or heating at a rolling boil for several minutes. Put any perishable food in a big cooler with ice. Don't leave food scarps outdoors and if you catch fish gut and clean away from your tent (they attract bears). If you can't keep food in a vehicle hand it in between two trees by some rope.