Three things, all traditional and all slower than the industrial standard: it's made from desi (native, non-hybrid) grain rather than high-yield commercial varieties; it's hand-roasted in small batches rather than machine-roasted at industrial scale; and it's stone-ground on a natural mountain chakki at a slow 40–50 rotations per minute rather than a high-speed steel roller mill. On top of that, nothing is made until an order is placed, so there's no long-shelf-life stock sitting in a warehouse, and every batch is preservative-free and chemical-free. Together, this is what separates a premium, artisanal sattu from a mass-produced one — the process is closer to how sattu has been made in Bihar for generations than to how most commercial brands now make it.

Sattu is a traditional Indian flour made by dry-roasting a grain or legume and then grinding it fine. Unlike raw flours, sattu is already cooked through the roasting process — which is why it's traditionally called India's original instant food. It's a staple across Bihar, Jharkhand, Uttar Pradesh, Odisha, and parts of Punjab and Delhi, eaten as a savoury or sweet drink, a porridge, or a stuffing for parathas and the Bihari classic, litti.

Natureship makes four kinds of sattu, each from a different roasted grain or legume:

• Chana Sattu — made from roasted Bengal gram (chickpea/chana). The most common variety, high in protein and fibre, and the base for most sattu drinks and parathas.

• Jau Sattu — made from roasted barley. Lighter and slightly nutty, traditionally considered cooling for the body and popular in summer drinks.

• Kulthi Sattu — made from roasted horse gram (kulthi), known in different parts of India as muthira (Malayalam), ulavalu (Telugu), and hurali (Kannada). Valued in traditional home remedies and known for its high protein and iron content.

• Makai Sattu — made from roasted corn (makai). A naturally gluten-free option with a distinct, slightly sweet corn flavour, and Natureship sources it non-GMO.

Traditionally, sattu is made in three steps: cleaning the grain, dry-roasting it (historically over a wood or coal fire in an iron vessel, with sand sometimes used to distribute heat evenly), and then grinding the roasted grain into a fine flour on a stone mill, or chakki.

Natureship follows this same traditional process rather than the factory method most commercial sattu brands now use, which relies on steel roller mills and large-batch industrial roasting for speed and shelf life. Specifically:

• Every batch is hand-roasted in an iron vessel, not a gas-fired industrial roaster, so the person roasting can control heat and timing batch by batch.

• Every batch is stone-ground by hand on a natural mountain stone chakki, at a slow 40–50 rotations per minute — far slower than the high-speed steel rollers used in mass production.

• Nothing is made until an order is placed — there's no long-shelf-life stockpile sitting in a warehouse.

• It's sourced directly from women-led producer communities ("didis") in Bihar and Jharkhand, keeping the whole process within the villages where the tradition comes from.