As an expert sommelier and brewer, I can provide you with some guidance on how many bottles of Champagne you would need for a toast with 20 guests. A Champagne toast is a special moment during a celebration, and it's important to have enough bubbly to ensure everyone can participate in the toast.
Based on my experience, I would recommend planning on one bottle of Champagne for every ten guests. This guideline takes into account the fact that for a Champagne toast, you only need to pour about a third of a glass for each person. By estimating one bottle per ten guests, you can ensure that everyone will have enough Champagne for the toast.
So, for a toast with 20 guests, you would need around two bottles of Champagne. This calculation is based on the assumption that each guest will have one glass for the toast, and taking into account that a standard Champagne bottle contains around 750ml or 25 ounces.
It's always better to have a little extra Champagne than to run out during such a special moment, so you might want to consider getting an additional bottle, just in case. It's better to have some leftovers than to disappoint your guests.
Additionally, it's worth considering the preferences and drinking habits of your guests. If you know that your guests are particularly fond of Champagne or if they have a tendency to drink more, you might want to consider increasing the amount of Champagne accordingly.
For a Champagne toast with 20 guests, I would recommend having at least two bottles of Champagne. This calculation takes into account the average amount needed for a toast and ensures that everyone can participate in the celebration. Remember, it's always better to have a little extra than to run out, so consider getting an additional bottle just to be safe.
I hope this information helps you plan your Champagne toast and creates a memorable moment for you and your guests. Cheers!