Thank you @fjorenca, spring is a wonderful time to be among trees!
Now, the carob flour is a bit tricky. Since it’s a very hard nut it requires a professional mill but you can try at home with a blender or even better with a coffee grinding machine.
First you cut the carobs into 3-4 pieces each and you boil them for 5 minutes. You leave them soaking in the hot water for 24 hours. After that, you remove the seeds and cut into small pieces with a knife. You leave them to get dry and then you put them in the oven at 100° C for 4 hours. After that it should be ready for grinding!
Or you can just buy some carob flour :)
P.S. The water that you boiled the carobs in, is sweet. You can boil it some more to make carob syrop.
I hope that's helpful!