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One of our main activities is cultivating and processing silverskin onions for the preserving industry. We grow our silverskins exclusively under supervision of our own staff. The fields are located in the Northeast polder, Drenthe and Limburg. We process all silverskins at our company location in Creil. The product we ship from our plant has been washed, peeled, graded and packed in crates or drums. Any tonnage we cannot supply fresh is preserved in acetic acid. We export the majority of our production. Please find below a detailed overview of how we grow and process our silverskin onions.


In the beginning of April we check if the soil is sufficiently dry to start sowing. Silverskin onions are sown across the entire field. The photo on the right shows our sowing tractor. It is equipped with a nose wheel to flatten the soil evenly.

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Silverskin onions are sown across the entire field to make the best possible use of the available surface. On the right you see how we spread fertilizer.

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For the combat of the onion fly we are using sterile flies. for this we don’t use pesticides anymore.  These flies are made sterile, and on every parcel we  release hundreds of thousands flies. we ensure that the ratio of sterile flies - wild flies is 10 to 1. there are 10 times more sterile flies than wild flies flying on every parcel. The chance is very high that a wild fly mate with a sterile fly. Because of this biological control the flies will become extinct.

Certificate Certificate De groene vlieg

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By mid July we start checking if the product in the fields is ready to harvest and determine the order in which to process our fields. We then contact our agricultural service contractor. He uses a single machine to cut down the leaves, to pull up the onions and to sieve out the soil. The machine unloads the product into tippers which take the product to our Creil plant for processing

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At our plant in Creil we wash and grade the onions according to size before we peel them. We strictly adhere to HACCP operating procedures, which guarantee a high level of hygiene and food safety.

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Finished product

Silverskin onions are packed in drums (covered in acetic acid if so required) or in plastic crates and transported to preserving factories. Any onions we cannot supply immediately are placed in our cold stores.

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Most silverskin onions end up in glass jars covered with a sour or sweet-sour liquid. Silverskin onions are also frozen and packed in polybags. Often, these frozen silverskins are mixed with other vegetables for catering clients.

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