Grab the rom for whichever Texas Instruments calculator you like best and use one of the various TI8X emulators:
https://www.f-droid.org/en/packages/com.eanema.graph89/
Just google for the rom file you want. I just tried the TI92+ found here:
https://wowroms.com/en/roms/mame/download-ti-92-plus/108878.html
Weird calculator, but one of the more common TI models should look just as nice
I made it last night, used half molasses half maple syrup. But the recipe I tried used lemon and I didn't like the resulting flavour. Also the ginger we had wasn't as fresh as I would have liked. I'll try it again using a more traditional recipe.