I'm skeptical Impossible Foods makes a version only for Delta and a different one for United. I don't see the cost justification. I suspect UA and DL are paying cost or less and in return Impossible gets marketing and more bodies trying the food - it definitely is not in Impossible's interest to create a version people don't like - that would just cause people to not buy their food in the future - as in - I tried - didn't like it - won't do it again.