As an expert sommelier and brewer, I can certainly help you determine how many bottles of champagne you will need for a toast with 100 guests. It's important to consider the size of the glasses and the amount of champagne you want to serve to each guest.
For a sensible measure, where you leave a finger of space in the top of the glass, I would recommend having approximately 15 bottles of champagne. This will ensure that each guest receives a decent amount for the toast without overflowing their glasses.
However, if you want to be more generous and provide a full glassful of champagne to each guest, then I would suggest having around 17 bottles. This will allow for a more substantial pour and ensure that everyone can enjoy a proper toast without feeling like they received a small amount.
It's worth mentioning that the size of the bottles can also vary. Champagne bottles usually come in different sizes such as standard (750ml), magnum (1.5L), and jeroboam (3L). If you opt for larger bottle sizes, you may need fewer bottles overall. However, keep in mind that larger bottles can be more challenging to pour and handle.
Additionally, it's important to consider the preferences and drinking habits of your guests. If you know that your guests are particularly fond of champagne and will likely want more than just a toast, it may be wise to have some extra bottles on hand to accommodate their enthusiasm.
Personal experiences can provide valuable insights into planning for such events. I remember organizing a wedding reception for 100 guests where a champagne toast was a highlight of the evening. We opted for 15 bottles of champagne, leaving a finger of space in each glass. The guests were delighted with the gesture and enjoyed a perfect amount for the toast. However, we did have a few guests who requested additional champagne after the toast, so having a few extra bottles proved to be a wise decision.
For a champagne toast with 100 guests, I recommend having 15 bottles for a sensible measure with a finger of space in the glass, and 17 bottles if you want to provide a full glassful. Remember to consider the size of the bottles and the preferences of your guests when making your final decision. Cheers to a successful event!