Food

The act of toasting feels natural: You lift your arms in affirmation and drink in honor of an occasion or a loved one.

It's what millions will do this week as they ring in the New Year, but why? Like shaking hands or saluting, toasting is a habit with incredibly foggy beginnings, so we here at The Salt decided to dig into it, for the sake of science.

If the thought of watching the ball drop in Times Square again is already making you yawn, consider perking your New Year's Eve celebration with this tradition from Spain: As midnight nears on Nochevieja, or "old night," the last day of the year, the entire country gathers in front of television screens or in town squares, clutching a small bowl of green grapes and wearing red underwear. More on the underwear later.

There's nothing like the distinctive "pop" of the uncorking of a bottle of bubbly to create a sense of celebration. Whether it's Dom Perignon or a $10 sparkling wine, bubbles add pizazz.

Sparkling-wine lovers sometimes point to the glittering streams of tiny bubbles as an important attribute. Why? Well, tiny bubbles are a sign of age, explains French chemist Gerard Liger-Belair, author of Uncorked: The Science of Champagne.

Kathy Del Tonto started cooking school food 30 years ago in the Montrose school district at the foot of Colorado's San Juan Mountains. Back then, the cafeteria workers made everything from scratch.

"My first kitchen that I managed was a little country school out south of town, and we made our own ketchup and everything," she says.

It's the holiday season and for some people that means celebrating with friends, family and cocktails. But instead of settling for the standard martini or Manhattan, author and historian Lesley Blume suggests you reach for a taste of bygone cocktail culture.

In Let's Bring Back: The Cocktail Edition, Blume outlines more than 100 lesser-known oldies that are both delicious and delightful. She joins NPR's David Greene to discuss cocktail history and how to make vintage recipes part of a modern-day party.

Unlike a good martini, the story of gin isn't smooth; it's long, complex, sordid and, as Richard Barnett has discovered, it makes for tantalizing material. Barnett's newly published The Book of Gin traces the liquor's life, from its beginnings in alchemy to its current popularity among boutique distillers.

Barnett joins NPR's Renee Montagne to discuss the medicinal origins and changing reputation of gin.

Interview Highlights

On gin's medicinal origins

Veganism has long been thought of as a bland, fringe diet typically associated with hippies or trend-setting Hollywood types. But chef Bryant Terry is trying to chip away at that stereotype.

Got milk? Ancient European farmers who made cheese thousands of years ago certainly had it. But at that time, they lacked a genetic mutation that would have allowed them to digest raw milk's dominant sugar, lactose, after childhood.

Today, however, 35 percent of the global population — mostly people with European ancestry — can digest lactose in adulthood without a hitch.

Mixing spiritual and culinary nourishment might seem like an odd pairing to some. But it all comes naturally to Father Leo Patalinghug. He's a priest of the archdiocese of Baltimore, and the author of multiple cookbooks. His latest is called "Spicing Up Married Life," where advice about strengthening your marriage sits side by side with recipes for romantic meals.

Because Christmas Day means good cheer and good food for many, All Things Considered asked you to describe what you eat on the holiday — whether you celebrate Christmas or not. You told us about tamales, pickled squid, homemade soup and (of course) Chinese food.

Last Christmas, we told you about tourtières, the savory meat pies Canadians serve around the holidays. Now, we bring you cretons, a Québécois delicacy found throughout Canada and parts of New England this time of year.