The 1,000 year old Brunei food

Do you know what this guy is doing?He is making sago by pressing on the cut rumbia tree trunks. Ambuyat is made from sago which is in powder form. To make sago, a rumbia tree is cut down. The trunks are cut into pieces and crushed. While crushing water is added to it. The remnants of the crushings are washed and when dried, sago will be obtained.In the old days, crushing was done manually. This