I did a taste survey of several different brands of Keto-friendly marshmallows. I adore marshmallows! I got the sampler pack. It came with these flavors: 1. Burnt Caramel 2. Classic Vanilla 3. Lightning Vanilla (has caffeine) 4. Cinnamon Toast 5. Mint Chip 6. Birthday Cake.My favorites were in order of preference: Birthday Cake (how do they DO that? It really tasted like birthday cake), Classic Vanilla, Lightning Vanilla (tasted like regular vanilla, just with caffeine), then Cinnamon Toast, Mint Chip and Burnt Caramel. Just because the 3 are at the end doesn't mean I wouldn't eat them. Lol. I'll eat just about anything marshmallow. The Burnt Caramel smells like caramel, tastes like caramel, but at the end had a slight coffee flavor. I detest coffee. It wasn't enough that I wouldn't eat them, though. (There IS a reason I'm on the Keto diet). The Mint Chip was surprisingly strong (probably a good thing) and cured my craving for mint right away. I have to be in the mood for mint, so I probably wouldn't get these a lot. The cinnamon smelled wonderful but were a bit ... spicy? Worth eating, but didn't hit that "marshmallow heaven" spot for me.I tried a different brand of Keto marshmallow and they tasted great, but were very hard. These were soft and fluffy as a regular marshmallow. They had some chew, but weren't nearly as chewy as the first brand I tried. I tried a third brand and they were imported, quite expensive, and like eating a cloud. The Max Mallow brand left me feeling like I really ate something. The imported brand was "no added sugar" and the nutritional information was in a foreign language (what do they speak in Belgium?) so I can't tell if they fit my diet or not. So I'd say these Max Mallows were the best for a snack to help me stay on my diet, especially since they come out to zero net carbs. At only 90 calories per BAG, they would fit most any diet.The package says "fueled with MCT oil" but I didn't know what that meant. I looked it up online and Healthline says "MCT oil is a supplement that many athletes and bodybuilders use to get a boost in energy or support their weight loss efforts. It is also thought to help with other things such as fighting infection, managing certain neurological conditions, reducing the chance of heart disease, and more." I like a boost in energy, but I do want to sleep at night. Lol. We'll see how it goes since I've eaten way too many now since I had to try them all.