Daun ubi tumbuk is a vegetable dish in Padang food made from puréed cassava leaves. The cassava leaves are traditionally pounded with a wooden mortar and pestle

Mortar and pestle

A mortar and pestle is a tool used to crush, grind, and mix solid substances . The pestle is a heavy bat-shaped object, the end of which is used for crushing and grinding. The mortar is a bowl, typically made of hard wood, ceramic or stone...

, although finely chopping or puréeing them using a blender

Blender

A blender is a kitchen appliance for chopping or liquefying food.Blender may also refer to:Media:* Blender , a music-themed magazine* Blender , a free and open-source software program for 3D modeling, animation, and rendering...

 is an alternative.

The leaves are cooked in a fried spice paste consisting at a minimum of chilis and shallot

Shallot

The shallot is the botanical variety of Allium cepa to which the multiplier onion also belongs. It was formerly classified as the species A. ascalonicum, a name now considered a synonym of the correct name...

s, but usually some or all of ginger, galangal

Galangal

Galangal is a rhizome of plants of the genus Alpinia or Kaempferia in the ginger family Zingiberaceae, with culinary and medicinal uses originated from Indonesia...

, candlenut

Candlenut

Aleurites moluccana, the Candlenut, is a flowering tree in the spurge family, Euphorbiaceae, also known as Candleberry, Indian walnut, Kemiri, Varnish tree, Nuez de la India, Buah keras or Kukui nut tree....

, garlic

Garlic

Allium sativum, commonly known as garlic, is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, and rakkyo. Dating back over 6,000 years, garlic is native to central Asia, and has long been a staple in the Mediterranean region, as well as a frequent...

, lemongrass and other spices, along with coconut milk

Coconut milk

Coconut milk is the water that comes from the grated meat of a coconut. The colour and rich taste of the milk can be attributed to the high oil content. In many parts of the world, the term coconut milk is also used to refer to coconut water, the naturally occurring liquid found inside the hollow...

 and ikan teri. Daun ubi tumbuk is frequently cooked with cempokak

Solanum torvum

Solanum torvum , is a bushy, erect and spiny perennial plant used horticulturally as a rootstock for eggplant. Grafted plants are very vigorous and tolerate diseases affecting the root system, thus allowing the crop to continue for a second year.It is also known as Devil's Fig, Prickly Nightshade,...

, a small bitter aubergine.

For Western cooks, kale

Kale

Kale is very high in beta carotene, vitamin K, vitamin C, lutein, zeaxanthin, and reasonably rich in calcium. Kale, as with broccoli and other brassicas, contains sulforaphane , a chemical with potent anti-cancer properties. Boiling decreases the level of sulforaphane; however, steaming,...

 is a possible substitute for cassava leaves.

A different daun ubi tumbuk recipe is prepared by the Dayak of Kalimantan

Kalimantan

In English, the term Kalimantan refers to the Indonesian portion of the island of Borneo, while in Indonesian, the term "Kalimantan" refers to the whole island of Borneo....

, simply boiled with shallot, animal fat and salt.