Avoid jars and bottles and other equipment made of plastic when you prepare and store your flavoured schnapps and liqueurs.
Plastic-lined lids and caps - and jars and bottles with rubber rings - are no good either.
That's because the flavours from plastic and rubber could be transferred to your schnapps or liqueur and spoil it.
However - glass, steel, ceramics, and glazed earthenware are fine materials for schnapps and liqueur making.
You don't need much equipment to make your own flavoured schnapps or liqueur - and most of it are everyday things you may already have in your cupboards and drawers.
Here is a list of what you need - though you might not need it all to begin with...
Glass jars with tight-fitting lids Used jam jars are fine as long as they are absolutely clean and free of any residual flavours.
Bottles with tight-fitting caps Used wine and liquor bottles with screw-on caps are fine, as long as they are absolutely clean and without any residual flavours.If you choose to use coloured glass bottles, make sure they are made from dyed glass. Painted glass bottles are no good, because the paint will adversely affect your infusion - some times it will even peel off.
Zester for peeling citrus fruits If you don't have a zester, use a potato peeler instead. Just make sure you only peel the coloured outer rind (the zest) of the fruit. The white inner rind has an unpleasant bitter taste.You can buy good zesters at any store that sells specialty kitchen equipment.
Steel strainer, steel funnel + gauze or cotton wool For straining and filtration.
Alcoholmeter For adjusting the alcohol content. Necessary when diluting pure grain alcohol. Can be purchased at brewers supply stores and wine-making stores.
Bottle corks If you prefer to close your bottles with corks, choose wine corks of good quality. Can be purchased at any wine-making store or brewers supply store.Note: Old or used corks might not fit properly into the bottle neck, they can impart an off taste - or they can crumble from age.
Cork-inserter Can be purchased at any brewers supply store or wine-making store.