I've broken a 7 and 15 day fast with fat and liver in the past few years. At 48 hours, it's really probably not that big a deal how you break it. Anything over say 4 days, you need to start taking more caution.
In retrospect, I ate too much protein in breaking my 15 day fast. Shoulda stuck with avocado, meat fat, a bit of liver or maybe oysters or egg yolks; along with whatever carbs you plan to attune your stomach to digest best.
For example, if you eat alot of fibrous paleo carbs (lets just say, onions, carrots, cucumber, squash, peppers, beets, etc); then you probably want to introduce those pretty soon. If you eat alot of sugary fruit, I'd say then introduce those in small amounts at first, so that you don't just spike your insulin after being in fat metabolism.
But really, the more I learn, the more I realize that, you want to be low carb, but not ketosis, low/moderate protein, and high fat. Best balance of hormone profile and longevity.