A discussion about the bigger malus sieversii that was bland is a recent discussion
that could be a good one to try
(quote from discussion, and quote from Smithonian (reduced )
Malus sieversii*** , much larger than other wild apples.
soft and have a **very plain flavor disliked **,”
domestic = 46 percent of the domestic apple Malus sieversii
21 percent European crabapple, Malus sylvestris;
the other 33 percent uncertain origins.