Is it going to be inside or out? If inside then varnish works fine. Outside - bare teak is the easiest and any coating just leads to more hard work further down the line.
^^ This. Boracol or a DIY formulation of the same.Teak oil marks everything especially walk off surfaces and cotton, it also attracts dirt like a magnet.
My teak deck, rope boxes and teak garden furniture at home is all treated with Boracol which soaks in.
No staining, it is a biocide kills mould and algae, stops dirt build up.
Treat it leave a month, lightly wash it when dry apply a second coat, thereafter another coat each spring and autumn.
It stays silver and clean, no smell no problem with clothing and it stays clean.