I've tried sea moss gel for its reputed health benefits, and I agree, the taste can be quite plain. However, I've found that mixing it into smoothies or juices can make it more palatable. As for the amount to consume, it's generally recommended to start with a small amount, such as 2-3 tablespoons, to see how your body reacts.
If you're interested, I found a source for organic sea moss gel that follows Dr. Sebi's inspiration. They suggest consuming 2-3 tablespoons, which aligns with the general recommendation.
Also, for those looking to explore more about fermented seaweed, I came across a recipe for fermented seaweed salad that might interest you.