Olive Auction built this page from public records so buyers can find the estate. Its own people can claim it at no cost — complete the story, list lots, answer buyers.
After a claim, we confirm by emailEverything here comes from public sources — award lists, certification registers, the territory inventories. The rest of the story — the family, the grove, the real age of the trees, this year's lab sheet — only the mill can tell, and it is the part buyers bid on.
Detlev von Rosen left Sweden for the Algarve in 1969 to grow winter vegetables for northern European markets, drawn by the mild climate; by 1972, defeated by the logistics of shipping produce north, he had switched to ornamental plants and built a nursery the company describes as among Europe's most significant in that sector. Olives came in around 2000, when successive dry years made an orange grove on the property untenable and it was replanted with olive trees, which, as the producer notes, need little water and have been present in the Algarve for thousands of years.
The olive holding covers 15 hectares at Moncarapacho, in the eastern Algarve. It is planted to Maçanilha, the regional variety, alongside Verdeal, Picual and Cobrançosa, and yields five premium oils as single varieties or as blends named for the ground they come from, Cerro de São Miguel and Ribeiro do Tronco among them. Fruit is picked green by hand and goes straight to the mill on the estate, where extraction, filtering, storage and bottling all happen.
The producer records medals across more than twelve consecutive years. Maçanilha took Gold at the New York International Olive Oil Competition in 2023, Gold at Olive Japan the same year alongside a Gold for the Selection, and Gold at the Berlin Global Olive Oil Awards in 2023; at the 2026 New York competition Cerro de São Miguel won Gold and Maçanilha Silver.
From the public record: monterosa-oliveoil.com
A producer account takes a minute — name, mill, region. We attach this profile the same day.
Lab numbers, tree references, harvest dates, a photo — the tap-through form asks only for what buyers pay for.
Auction with a confidential reserve, or a fixed-price allocation. We review it and it goes live.
The catalogue goes to this list before it goes on the site. When the sale closes you get every hammer price from it — including the ones that disappointed.
Two emails. Then quiet until Sale No. 2.
