It’s often called black lava salt or black obsidian salt, and it is made from activated charcoal and sea salt. Black salt doesn’t taste majorly different than regular sea salt. It does have a slightly smoky aroma. If you're not a fan of black salt, you can use regular salt. I also recommend trying tajin for the rim- it goes really well with pineapple. You can also try a sugar rim if you prefer a sweet cocktail over a salty one.