Baked with Love: How Food Allergies Led to the Invention of Baking Powder

When an ingenious chemist indulges his wife’s sweet tooth, he changes the face of baking forever in this charming story of science—and true love.

Elizabeth Bird is allergic to cake. In truth, she’s allergic to yeast and eggs, and there is no cake without yeast or eggs in 1843 Victorian England. But the love of Elizabeth’s life—her husband, Alfred, who happens to be a chemist—doesn't want her to keep missing out on parties and treats, so he turns to science for a solution. Through a trial-and-error labor of love—and countless bubbly messes—Alfred finally invents a simple substitute that will enrich his wife’s life and lead to light and fluffy cakes for all: baking powder! Sweetened with expressive illustrations and a generous dusting of backmatter, this playful narrative advocates for hands-on science while spotlighting kitchen chemistry, the widespread uses of baking powder, the history of food allergies, and the many ways in which important inventions or accommodations for people with disabilities benefit whole societies.

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs