NO tofu and tempe (soybean cake) vendors could be found in Kranggan Market, Yogyakarta, on Monday last week. They had all gone to support a protest organized by the Tempe and Tofu Producers Cooperatives Association (Gakoptindo) as a result of the soaring soybean prices, which had reached Rp10,000 per kilogram. Gakoptindo Executive Chairman Aip Syarifuddin said in July that prices were still below Rp7,500 per kilogram. But the price had rocketed t