Ive just started kegging and when cleaning a keg to be filled It came up with a metallic smell as soon as i put starsan in it.
The kegs were refurbished from lhbs but apparently not cleanded thoroughly.
I cleaned them with really hot (basically boiling) water and dishwashing machine powder, let soak then scrubbed with a brush. Rinsed out several times.
At this point it was smelling fine as was the starsan.
As soon as I put the starsan in the keg, or the lid in to starsan, the smell came up.
A rinse with hot water removed the smell.
Whats causing this? is my starsan too strong? Is something wrong with my keg?