Tomorrow's Bites with Andrés and Sjacco Evelien Moriau: Building a Habit-Changing App Fighting Food Waste & Crowdsourcing Supermarket Data - With Founder Ostras Evelien Moriau
What if the biggest reason we waste food isn’t laziness, but lack of transparency?
In this episode of Tomorrow’s Bites, we sit down with Evelien Moriau, founder of Ostras, a startup that’s turning everyday grocery shopping into a data-powered tool to fight food waste, save money, and change consumer habits at scale.
After years in consulting, Evelien made the leap into entrepreneurship with a simple but radical idea: if supermarkets won’t share real-time data about short shelf-life products, consumers can. Inspired by platforms like Waze, Ostras crowdsources supermarket data directly from shoppers—putting transparency and power back into the hands of the people.
In this conversation, we unpack:
- Why sustainability alone doesn’t change behavior (and what does).
- How crowdsourcing can outperform top-down food waste solutions.
- The psychology behind habit change in grocery shopping
- Why food waste is a consumer problem as much as a supply-chain one.
- How incentives, not guilt, drive real impact.
This is a grounded, honest look at what it takes to build a food tech startup that operates at the intersection of behaviour, data, and climate impact, without relying on idealism alone.
🎧 Listen now to discover how small daily actions, multiplied by millions of people, could quietly reshape the food system.
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😊 The Guest: Evelien Moriau