Bangkok I bet the one in the pic is not chewy or dense like chewy sugar apples.
I only heard of chewy sugarapples on this forum from out of the usa. If Vietnam has them as well then they should also be in Thailand i guess.
Today on chatuchak market i saw people eating sugarapples out of their hand like a normal peeled apple. Guess i always eat them overripe because they are too soft to peel and then eat out of the hand.
My Choctaw/French Grandmother told me she remember eating them as a child in the French Indochina Protectorate. My father who is Annamese/Russian remember eating them and his mother grew them in the Cochin trade Concession. My father is 96 so you can figure the Chewy Sugar Apple has been there for awhile. I gather When Emperor Ferdinand Maximilian the French Ruler of Mexico could have forward Mexican dragon fruit & sugar apple to the French Indochine Empire and they were bred & selected for the Annamese/kampuchean tastes. The Boca Giant Chewy Sugar Apple were devrive from Annona ancestor came to Cape Coral/Fort Myer in the 60's. I visit my DOD Boss home there in the mid 80's and discovered this Seminole's war bride from Vietnam planted several trees on the bank of the Brackist Calahoosa river. I was impress with a tree and took a large fruit from it and develop it further with my Seminole's brothers and the South East Asian Immigrant and Surinamese Communities here in The Southeastern US.
In Modern Vietnam, the Chewy is prefer but unfortunate war in the Indochine region have destroy a lot of good selections develop prior to the fall of Saigon. I was fortunately apple to preserve it & select it better for florida. Most of the chewy sugar apple floating around in S. Florida sadly are the degenerate from the original. No selections work or stabilization to maintain a true end up with what PIN sold as an easy peel. I bought from bender grew it, tasted it and I yank out of ground potted it and gave it to Nullzero I Think when he visited me this summer!
. I had bought chewy from Richard at Excalibur, I send him so many Vietnamese clients over the decades and they told me its had high variances. I bought chewy from treehouse back in the 90 and I found none compare in taste and size, salt water resistant as the Calloosa strain. I am sure their are some Sith breeder in Vietnam with good chewy selection. But so far the Taitung Annona Mafias have not found any Vietnamese Chewy to Match my Boca Giant Chewy & Orlando strains which took me almost two decades to breed & select many line from it.