A "cl." in Europe is like an "oz."in USA.It`s called mettric system.An ounse
is about 3cl.,a cup-24cl.,a pint-48cl.One cl.(centiliter)consist
10g.(gramm).So 1oz.is about 3cl.or 30gramms(the real value is 29gramms.)Now
you can mix by europian standarts.Cheers!