I asked Seamus the same question and he said they were slightly different receipes! However, I also asked what lab equipment they had and I was told none! 5 minutes later when I asked about yeast vitality I was told the check yeast everyday under the microscope!!!
If I were to brew and sell one to aldi I would make sure the receipe would be different just in case it ever went legal. That way you can protect the main brand.
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