You can choose your own ingredients, or take a bit of everything. Mine has a particular inclination for jelly-like substances. And a couple of fruits - lychee, longan, rambutan with pineapple, and sea coconut. You can try out the stuff I tend to leave out - including red beans (I don't care for how they tend to disintegrate and change the texture of the drink), white fungus, and a papaya-like looking thing called pek kuay. There's also cincau, or leong fun, or grass jelly. I've had this on an average of once a day for the past two weeks (basically ever since I found out I had a license to wallop the stuff, with my low glucose level), and I've cemented my obsession with the following:
- See koh teng is mostly sold from a van, and for my favourite dealer, I know his entire schedule from memory - covering three locations, two daily shifts, one off day. Plus I know how well his two different afternoon shifts tend to go, which affects the closing time of his evening one.
- I have memorized exactly where all his ingredients are placed, and in what order, so that when I drive and stop next to his van (where I can't see what he has in front of him) I can just roll down the window and say, "One big packet, without row three."
- Without a second thought I'll go out in the rain to get my daily ration of see koh teng. Right now I also head to work early every Wednesday just to pick up my packet on the way.