Prices of cooking oil could be buoyed up for years by stagnating production and a biodiesel push in top producer Indonesia that are making traditionally cheap palm oil costlier, eliminating an advantage that also curbed prices of rival oils.

Used in everything from cakes and frying fats to cosmetics and cleaning products, palm oil makes up more than half of global vegetable oil shipments and is especially popular among consumers in emerging markets, led by India.

After decades of cheap palm oil, thanks to booming output and a battle for market share, output is slowing and Indonesia is using more to make biodiesel, industry analyst Dorab Mistry said.