Looking for recommendations of places that make really good milkshakes. Most important is the quality of ingredients... Real ice cream and milk, flavorings that aren't gloppy super-sweet syrups. Proper ratios so it ends up thick but drinkable.
If you have a particular favorite flavor that stands out, feel free to post that as well.
Sonic and Cook Out chains are notable for advertising lots of flavors, but I am not a fan of their industrial overly sweet flavoring syrups.