The First Mile/An interview series on sourcing surety Episode 01 · produced by Finches

“Please call when you see smoke, not when the fire is already burning.”

„Ruft bitte schon, wenn ihr Rauch seht,
und nicht, wenn das Feuer lodert.“

Diana Wicht Supply Chain Lead, McDonald’s Deutschland LLC. Fourteen years at the company, 1,400 restaurants, more than 1.5 million guests a day.
Recorded 5 August 2026 14 minutes In German, English subtitles
Diana Wicht
Diana WichtMcDonald’s Deutschland LLC
01The episode

My guest is Diana Wicht, supply chain lead for McDonald’s Germany: purchasing, logistics, food safety, quality and sustainability, behind 1,400 restaurants and more than 1.5 million guests a day. We discuss why she talks about volatility in the plural, why closed ports are not on her list, what it means that a potato variety can only be judged once a year, and how contract farmers now grow the wheat for the buns between potato crops.

1,400
restaurants in Germany in her supply chain
1.5 m+
guests a day, all served to McDonald’s own specifications
two thirds
of the raw material comes from German agriculture, with at least two suppliers per category
02In this conversation

Six things she says that are hard to hear anywhere else.

01Why volatility only makes sense in the plural, and why containers and closed ports are not on the list for a German supply chain.
02Potatoes are harvested once a year, so a new variety can be judged once a year. What that does to breeding for a climate that is already changing.
03What EU pesticide rules look like from the field: varieties that have to be resistant and still yield enough for the farm to work.
04Crop rotation: the contract farmers who grow potatoes every few years now grow the wheat for the bun mill in between.
05Why McDonald’s cannot buy off the shelf, and what that forces the supplier relationship to become.
06Where data actually helps, and where it turns into reporting that nobody uses.
03Why this series

The first mile is the part nobody talks about in public.

Every conversation about food supply chains starts three steps too late, at the factory or on the shelf. The first mile is earlier: the field, the mill, the buyer in August asking whether this harvest will do what the contract says it will. That is where quality, risk and cost are actually decided.

The people doing that work carry a picture of their supply chain that exists nowhere in writing. They know which warnings turned out to be noise, which supplier calls at the right moment, and what they would want to know one season earlier. I want to hear it while it is still fresh, and I want it on the record, because the next person facing the same season has nowhere to look it up.

Catharina van Delden, Finches

04Watch

Watch the conversation.

Diana Wicht is supply chain lead for McDonald’s Germany: 1,400 restaurants, more than 1.5 million guests a day. She says which warnings reach her early enough to matter, why she talks about volatility in the plural, and the one sentence she gives every supplier she works with.

The recording opens as soon as you submit. Tick the email box and the next conversations reach you too, together with the background we gather while preparing them.

05Episodes
Episode 01: Diana Wicht
Episode 01 · 5 August 2026

Call us when you see smoke

Diana Wicht, Supply Chain Lead, McDonald’s Deutschland LLC
German · English subtitles · 14 minutes

Episode 02 is recorded.
Guests appear here once they have signed off, not before.

06The host

The drought that started this.

In Uruguay I look after 500 pecan trees and a rain gauge. In a dry year the loss announces itself months ahead, and what happens in those months decides how much of the crop survives it. Almost none of that early knowledge reaches the people who buy the harvest. Closing that gap between knowing and acting is what my company works on, and it is what I ask every guest about.

Catharina van Delden is co-founder and CEO of Finches. Before that she built innosabi out of TU Munich into the European market leader in its category.

Catharina van Delden
Catharina van DeldenHost · Co-founder and CEO, Finches
07Be a guest

Someone in your team who should be on this?

We record one conversation every few weeks with someone who carries real responsibility for raw materials. Nothing goes out before you have seen the cut, the article and the clips.

Write to us through the contact page and mention The First Mile. The note reaches Catharina directly.