I also want to give some additional info on the sounds, tough they may only available in Jakarta:
- Old supra motorcycle sound mean they sell chicken porridge
Annoying record that plays over and over mean they sell bread or meat bun (usually)
- “Tick-tick” sound mean they sold siomay – you can pick and mix between fish cake, steamed potato, bitter vegetables called “pare”, and steamed roll cabbage. After you done picking, the seller will add peanut dressing, sweet soy sauce, and a little bit of lime juice. They also sell “batagor” or fried siomay. Looks disgusting, but actually delicious! Pict: http://iendaw.files.wordpress.com/2010/02/siomay21.jpg
And last but not least, the sound of beating can plate (I think it’s “tung-tung”?) means they sell “Kembang Tahu” (Literal translation: Tofu Flower), a very soft food made from soy that even more soft than Japanese tofu with sweet and warm soup made mainly from ginger juice and java sugar. Pict:http://mahkotadewa.co.id/herbalshop/wp-content/uploads/2011/01/kembang-tahu.jpg