Carob nice cream is one of my favorite guilt-free treats, as there is no added sugar and it's so easy to prepare, without an ice cream maker.
About your carob nice cream consistency
Banana ice cream has a "soft serve" consistency immediately after you make it. You can either serve your nice cream right away when it has a soft serve consistency or if you want a scoop-able consistency, transfer your nice cream to a freezer safe dish and place in the freezer for about 2 hours. When I say about 2 hours, I really mean it. So set a timer if you don't want to forget about it. If you let it more than that, it will freeze solid as a brick so you will need to let it sit on your kitchen counter for a while before being able to scoop it.
About the bananas for this carob nice cream
The ripper the bananas, the sweeter your nice cream will be and the stronger the banana taste of your nice cream will be. That's why I prepare my nice cream with yellow, almost still a little bit green bananas, has it will taste only slightly as bananas. When I want to use up my overripe bananas, I prefer to make either flambéed/foster bananas, banana bread or banana blueberry muffins. But that's just my personal taste.
Tips if you want to adjust the carob quantity to your own taste
According to how ripe your bananas are and according to your own taste, you might want to adjust the carob quantity for this carob nice cream recipe.
The quantity of carob you will want to use will also differ if you eat your nice cream as a "soft serve" or as a "scoop-able" consistency.
Why? Because when you taste your nice cream right after making it, when it has a "soft serve", you will get a different taste than if you place it in the freezer before serving.
How is that possible? Because, the colder it is, the more "seasoning" you need (that's a chef's secret that I read in a professional cookbook). So if you plan on placing your nice cream in the freezer to get a scoop-able consistency, you might want to add a little bit more carob. First time I made this, my nice cream tasted absolutely perfectly. I had the perfect balance between cabob and banana flavors. Until I decided I wanted a harder consistency and placed it in the freezer. When it came out, the flavors had almost disappeared!