When you have a wine tasting gathering you should only invite the number of people that you can fit comfortably in the room you want to have your party. A crowd may be intimidating. You do not want any of your guests to feel like they are being rushed when they are pouring a glass or tasting the wine. You can also get the wset certification via https://www.sommwine.com/wine-courses/wset/
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Always be sure to have bottled water on hand when you are having a wine tasting. This allows your guests to rinse their mouths out between tasting different wines. If you have just tasted a very heavy wine you must have water ready for the guests.
If you do not then their next tasting may be tainted due to the heaviness lingering in their mouths. In addition, water is good because guests will get thirsty and they need to drink something other than wine.
When you have a wine tasting it is important to provide food for your guests. However, you also want to be sure to have food on hand that will not change the way the wine tastes in any way.
Some people practice decanting before they serve wine at a wine tasting. This is very controversial to many different wine enthusiasts. Decanting is the process of letting the wine breathe before you serve it.
Some people let their wine breathe for a few hours before they serve it. However, decanting is not just letting your wine breathe but it is when you pour your wine into a completely different container to allow the breathing.