Richard W.
Yelp
This is a must stop for anyone who has never been to a traditional Bavarian beer garden. Housing people in the 1000's it is a chaotic scene so if possible, ask around ahead of time to go with a local who can guide you around. For example, be careful not to sit in a reserved space, sometimes with table cloths, otherwise sit at open, self-serve tables with nothing on them.
What you must order is a beer Krug, or a very large mug (1 liter or 33 oz) because they are fun to carry (with your palm) toast to and drink from. The lager, poured straight from a wooden barrel, is smooth, refreshing and well balanced. But you can also try a "Radler" which is a blend of spritzty lemonade-like drink with wheat beer, which makes for a sweetened low alcohol option.
The food is squarely Bavarian - so lots of pork, potato composite, pork ribs, pork chops, cabbage salads and there's even a kiosk selling grilled fish. There are pretzels, sausages, other unidentified sliced meats and even a lousy attempt at a pasta dish.
The entire experience is very festive and feels like you're amongst a very large summer camp because you're outdoors amongst the dirt and trees. The food experience is interesting - and worth trying, despite a lot of it being on the dry and/or salty side. But I've been told that is very traditional!
That's all...