And to make the festive season go with a bang, try some of the Big Bang Fair's christmas experiments and creations, including blizzard ice cream, crystal constellations (from salty water, a pencil, food colouring and some pipe cleaners) and explore the science behind Christmas lights.
Instead of rising to the top, the cream sits in its little cream tray, waiting for a piece of beard dandruff to drift down and seed a cream crystal.
After an hour remove from the freezer and churn your mix to prevent ice-cream crystals from forming.
Caplin's brand of cool is a whole different world, a world of body wraps and rainforest-derived face creams, crystals, detoxification, horrible little booties, pampering, Pilates and mawkish, wrong-headed self-belief.
But a dolorous air had settled in at the ballroom in the Four Seasons Hotel, over the tables, some empty, set with crumpets, cream and crystal flutes of Champagne.
For dessert, spiced apple cobbler baked in a cast-iron skillet was a sodden affair, and its scoop of vanilla ice cream harbored ice crystals.
By contrast, the Midnight Mocha Frapp, as I wrote, was like "the garden section at Home Depot". It combined milk, cocoa, whipped cream and mint crystals and was available with or without coffee.
Because they have an internal mechanism that detects low temperatures and then manufactures sugar, which makes it more difficult (just as it does in ice cream) for ice crystals to form.
What makes ice cream grainy is crystal formation.
Cheat's option: you can just wear a little black dress, but add something white, cream, ivory or crystal.
Berkeley Nucleonics' SAM 935, introduced in 1995 and upgraded annually, looks like a big can of shaving cream, with a crystal positioned inside the opening at one end.
