I don't usually make them myself. I have made them a few times, but usually at home I take my bourbon without any fuss. Neat or ice is usually all I need to decide on. Occasionally an Old Fashioned, a Manhattan, maybe an overproof bourbon with a splash or two of cider in the fall by the outside fireplace. That is usually the extent of my range at home. I normally leave making the Smashes up to the bartender at our brunch spot. They also make a great Brown Derby
There are many variations of Blackberry Smashes all over the internet. They can use honey, simple syrup, or sugar. I use demera sugar cubes because that is what I have on hand for Old Fashioneds. I also use much less or even no mint then most of the recipes. To me, a little mint goes a long way. (not a fan of mint juleps either) The drink also need a little bit of fizz. It can come from either Ginger beer, Ginger Ale, Club Soda, or 7up. I usually use Gingle Ale.
Below is a link to a recipe. But like I said, you can find many online and then spend an afternoon perfecting your own variation.
The blackberry bourbon smash is made with fresh muddled lime, blackberries, and mint mixed with bourbon and topped with soda water.
kitchenswagger.com