Discover and read the best of Twitter Threads about #foodsci
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Time for some #FoodSci tweets! There’s a new analytical device in the lab - a super cute water activity meter. Let’s take it for a spin and talk about my very favorite food science & thermodynamics topic: Water Activity (aw)! #FoodSci 1/21 
Water activity is molecular-basis effective concentration of water in a food (or in anything). “Molecular basis” means it’s not grams / liter or teaspoons/gallon, but it’s on the basis of number of molecules present (moles of water / total moles aka mole fraction). #FoodSci 2/21
“Effective” means it’s corrected to account for the ways certain molecules punch above their weight as it were, by interacting more or less than you’d expect based on their actual concentration. #FoodSci 3/21
Ok! I’ve been asked by @johndavidian to do a #PiDay tweet-storm on Key Lime pie and how it thickens without cooking! Strap in, #FoodSci ahead! Heads up, I'm about to disagree with Wikipedia en.wikipedia.org/wiki/Key_lime_… 1/29
Here’s a recipe. Something fun about key lime pie is that it’s kinda new, as the history of pie goes - it’s missing from my collection of midcentury cookbooks (this is Doubleday) 2/29
The interesting thing about the recipe is that we are not using heat to set the filling. This is no-cook. YET we add 3 liquids together to make the filling (four if you count the food coloring). What? 3/29
New thread! Now that we’re on a #FoodSci roll, let’s talk rolls! #1/16
I want to use my rolls as an excuse to talk about my favorite #FoodSci & #Thermo concept, that’s right, it’s water activity (aw) time! 2/16
Brief recap: water activity is the thermodynamic activity of water in a mixture. It’s related to (but not exactly) the molecular-level concentration of water in the mix. It’s 1.0 for pure water, then less for mixtures, 0 for things w/o water #FoodSci 3/16
’Tis the day before #Thanksgiving, time for more #FoodSci tweets! Up today we have: Dinner rolls, two kinds of dip, finishing the pumpkin pie. Let’s get started! 1/14
Our lovely CSA (Johnny & Leah of Tewksbury Grace) gave us a *lot* of beets this year. We have no #Thanksgiving food traditions for beets, time to make new ones! #FoodSci 2/14
Something that’s come up a lot in #FoodSci class this year is a suspicion of foods that arise from human activity - yes, processed foods, but also foods that have been created by humans such as GMOs. 3/14
