Choose durian v easy.
If u cant smell durian smell at all from afar, just walk away.
Freshness.. See stalk. Use your fingernails scratch the stalk. Green is fresh. Sibeh green ish sibeh fresh.
Brown, tell them jiaksai.
Also you can tell if it's natural fall from the stalk joint
Next is smell. Protect your face. Put ur palm on the durian, and press your nose between ur fingers and sniff. No smell at all, or u just raw husk smell, means not ripe yet.
Next is shape, or yield. Big doesnt mean good. Round is good. Odd shape, need see how odd. If all slanted 1 side, means the slanted side no room for durian .
If like pyramid shape, means the pointy part for every room likely no fruit or small fruit.
Some ppl also shake it to feel how many fruit inside but imo that 1 abit excessive unless u choosing premium durian.
Durian type.. Msw is got a star shape from the butt spread out.
Black thorn got a small black thorn at the butthole.
D24 butthole is like 20cent coin size.
Others i forgot liao