I am going to need to top off my first batch of wine in the coming days and need to know what to use. I have read to try not to use more then about 1L total of extra water during the entire process.I don't have extra wine because a little spilage from the first racking so what should I use? Should I use water first then use the same type of wine? I am making a Reisling, all help is appricated.