No culinary wonders in Bir. Your best bet is Emaho cafe: they have the largest variety and an out-door terrace in the back-yard. Friends' Cafe is also an option, although their choices are not as varied as the menu suggests. Simple bakery shop in street going down from taxi-stand, try their vegetable pie - good for take away during a long walk!
Do not drink water from the jugs in any place. Not only is the water not boiled, this water does also not come straight from the tap. Check the date on the bottles of soft drinks in all places, including shops.
Go to Dharamsala for pasta, pizza, salads, pies, cheese sandwiches, french fries, muesli and curd.