For the best texture, use finely shredded unsweetened coconut rather than large flakes so the clusters hold together easily. Adjust the sweetness to your taste by adding more or less keto sweetener, keeping in mind that some brands taste sweeter than others. If your kitchen is very warm, keep the clusters chilled until just before serving so the chocolate shell stays firm. Each cluster is rich and satisfying, so start with one and see how you feel before going back for seconds.