Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make bicerin [title] Use irish coffee mugs. [step] Bicerins are best served in clear glasses so that you can see the layers in the drink. As a result, you should use clear glass irish coffee mugs when serving a bicerin.

Ending1: [substeps] You will also know which whiskeys to serve yourself according to the recipe. Do not doubt the value of the reds and firsties. Ending2: [substeps] If you do not own irish coffee mugs, you can also serve the drink in a regular glass or coffee mug. [title] Fill a clear glass with hot water. Ending3: [substeps] Use plain irish coffee mugs with a rim. The rim should be painted gold or tinted blonde. Ending4: You can make your own irish coffee mugs from scratch, but they are more expensive. [substeps] Use a 2 to 4 ounce (55 to 200 ml) serving glass to drink bicerins.

Answer format: ending1/ending2/ending3/ending4