Essene bread is a beneficial food for O type, i personally find the sprouted wheat variety very tasty. I realise that it is quite pricy and here in Australia it is more than double the price of ordinary bread.
I personally think it is worth it as i slice it very thin and enjoy it with butter and tomatoe (toasted).can also be enjoyed with allowable fruit spreads for a sweet treat.
It has been my experience that the other varieties of sprouted essene bread is not quite to my liking, and i have not seen any where that the other varieties are recomended for O type.
Hope this is of benefit to you and i suggest you give it a try and if you like it you have a lot to gain, if not small price to pay to gain knowledge.
Kind Regards Carole

Ezekiel Bread and Essene Bread are "sprouted" wheat and other grain products. The sprouting changes the grains so that you can tolerate the gluten in the wheat.

Robbie