Why solar drying is the right starting point

Of all the value addition methods we teach, solar drying requires the least equipment and no electricity at all, which makes it the natural first step for members interested in preserving surplus harvest but not yet ready to invest in more involved processing. A simple raised drying rack and consistent sun exposure is genuinely enough to begin.

Building a basic drying rack

A raised rack, built from a simple wooden frame with mesh or fine wire stretched across it, keeps produce off the ground and allows air to circulate on all sides, which dries food faster and more evenly than laying it directly on a surface. Raising the rack also keeps produce away from dust, insects, and animals, which matters both for food safety and for the quality of the final dried product.

Positioning the rack to catch full sun for as much of the day as possible, while still allowing it to be covered or moved quickly if unexpected rain arrives, is the main practical consideration; several members have built simple hinged or removable cover systems for exactly this reason, since a batch of nearly-dried produce caught in a sudden downpour can be ruined in minutes.

Preparing produce for drying

Most vegetables and fruit dry more evenly and safely when cut into thin, uniform slices rather than dried whole, since thinner pieces lose moisture faster and more completely, reducing the risk of mould developing in a still-moist centre. Tomatoes, for example, are typically halved or quartered; leafy greens are usually dried whole or in large pieces since their thinness already allows fast moisture loss.

A brief blanching step — a quick dip in hot water before drying — helps preserve colour and nutritional value for some vegetables, though it is not strictly necessary for most of what our members dry, and we treat it as an optional refinement rather than a required step for beginners.

Knowing when produce is properly dried

Produce that is not dried thoroughly enough is the single most common cause of spoiled batches, since any remaining moisture allows mould to develop even in stored, apparently dry produce. We teach members to check for a leathery, fully pliable texture with no cool or damp spots, and to err on the side of longer drying time rather than risk storing anything with moisture still present.

Storage after drying

Fully dried produce should be stored in airtight containers, away from direct sunlight and humidity, and checked periodically in its first weeks of storage for any sign of moisture reappearing or mould developing — a sign the original drying was incomplete. Properly dried and stored produce from this method can last many months, giving members a genuine off-season income stream and household food supply from a single harvest glut that would otherwise have gone to waste or sold at a loss.

Drying during Nairobi's cooler, cloudier periods

Solar drying works best during Nairobi's sunnier stretches, and members attempting it during cloudier or cooler periods of the year should expect noticeably longer drying times and should check batches more frequently for any sign of developing mould given the slower moisture loss. We generally advise members to plan larger drying batches for sunnier months and to keep batches smaller and more closely monitored during less favourable periods, rather than assuming the same timeline applies year-round.

For members wanting more consistent year-round drying capacity regardless of weather, a simple solar dryer with a covered, ventilated enclosure can somewhat reduce this seasonal variability compared with fully open-air drying, though it adds a modest construction step beyond the basic raised rack covered here.

Solar drying rewards patience and attentiveness more than any special skill — checking a batch regularly, protecting it from unexpected rain, and being honest about whether a piece is genuinely fully dried before storing it are what actually determine whether a batch turns out well. Members who start with a small first batch, rather than committing an entire glut harvest to an untested method, tend to build confidence and skill fastest. We continue to refine our solar drying guidance based on which crops members have found dry most reliably under Babadogo's specific conditions, and we expect to add further crop-specific tips to this training as more members build experience with less commonly dried produce beyond the tomatoes and leafy greens covered most often so far.

Key takeaways

  • A raised drying rack with mesh allows even air circulation on all sides of produce.
  • Thin, uniform slices dry faster and more safely than whole or thick pieces.
  • Produce must be fully dried — leathery and pliable with no damp spots — before storage.
  • Properly dried, airtight-stored produce can last many months.

Frequently asked questions

How do I know when produce is fully dried?
It should feel leathery and fully pliable throughout, with no cool or damp spots remaining.

What happens if I store produce that isn't fully dried?
Remaining moisture allows mould to develop even in apparently dry, stored produce — always err on the side of longer drying time.

Do I need to blanch vegetables before drying them?
It's optional — blanching helps preserve colour and nutrients for some vegetables but isn't strictly necessary for beginners.