There's a short series over on my food site about chafing dishes, if any time travelers need to be filled in on their use and enjoyment. So far you can read
http://favoritefoodthisweek.blogspot.com/2016/11/chafing-dish-thoughts-1890s-style-vs.html and
http://favoritefoodthisweek.blogspot.com/2016/11/a-few-more-1890s-early-1900s-chafing.html . From my favorite of the many you can get free through the links in those posts: