Reddit mentions of Amoretti Premium Syrup, Peppermint, 25.4 Ounce

I second the idea to make your own. I get fair trade cocoa powder from Whole Foods and use it with a little sugar and milk. The cocoa powder seems to dissolve better if you heat the milk in something else then pour a little into your cup, sprinkle some cocoa powder on top, pour milk, sprinkle, pour milk till you're good on cocoa powder. Something about getting to relatively evenly wet with something warm helps keep it from clumping and just never unclumping.

For pre-made mixes I really love Starbucks hot chocolate. I'm pretty sure it's just cocoa powder and sugar, for the most part.

For other "flavors" like white hot choclate I'm partial to Land of Lakes. Fair warning: if you cannot have milk for whatever reason or you're lactose intolerant the Land of Lakes mixes do have milk powder and they're not friendly to lactose intolerant stomachs unless you take some lactaid with them. I learned this the hard way. Don't make my mistake.

ETA: Also for flavors you can just make hot chocolate with cocoa powder, sugar and milk or a basic mix like the Starbucks of TJ's mix and then add flavored coffee syrups. I personally favorite either Starbucks coffee syrups or these off Amazon. I really freaking love peppermint hot chocolate.

I hear you on the Swiss Miss. I asked my husband to get me some hot chocolate last year and I didn't think I needed to specify beyond that but oh I really did. He got a giant box from Costco that will take us years to get through. :(