Hidden Alpha Sandwich

[Dimethyltrip]

I can't seem to unlock the hidden recipe on Alpha, even though I am on 5 stars.
Any suggestions?
Thank you!

[Metalliguitare]

As far as i remember it, you need to conitinue to work on this planet until a customer asks you the same recipe as a custom order. I may be wrong, but on my side it's how I thought i figured out