About

Kathleen O’Connell

Confectionery food scientist. Candy consultant.

I studied food science at the University of Wisconsin-Madison, where my master’s research looked at sugar crystallization and sugar reduction in starch jellies. Since then I’ve developed new candies covering a variety of formats, launched new products, and installed and commissioned a starchless gummy manufacturing line.

Kathleen O’Connell, smiling, in a cream sweater on a white background.
  • M.S. Food Science, UW-Madison
  • AACT member

By the numbers

  • 8 years in food science
  • Worked with 30+ brands
  • Helped 5+ startups bring a product to market
  • Worked with 10+ contract manufacturers

Experience

Where I’ve worked

  1. 2025 to now

    Senior Research, Development & Application Scientist

    Kerry

  2. 2023 to 2026

    Aeration lab lecturer

    UW-Madison Candy Course

    Teaching
  3. 2023 to 2025

    Research, Development & Application Scientist

    Kerry

  4. 2021 to 2023

    Process Engineer

    Procter & Gamble

  5. 2020

    Research and Product Development Intern

    Lindt & Sprüngli

  6. 2018 to 2019

    Associate Food Scientist

    Conagra Brands

Credentials

Education, research and teaching

Education
  • M.S., Food Science, University of Wisconsin-Madison, 2021
  • B.S., Food Science, University of Wisconsin-Madison, 2018
Memberships
  • AACT American Association of Candy Technologists
Publication
O’Connell, K. and Hartel, R. W. (2022). The effects of corn syrup, water content and sucrose replacers on sucrose crystallization in starch jellies. Journal of Food Processing and Preservation 46(4). https://doi.org/10.1111/jfpp.16456
Teaching
  • Aeration lab lecturer, UW-Madison Candy Course, 2023 to 2026
  • Guest lecturer, Milwaukee School of Engineering, Food Chemistry
  • Coordinated industry confectionery courses, for Dr. Rich Hartel, UW-Madison

Why candy

Why candy

“Everyone likes candy, and I like working on something everyone likes.”

The work is real science: crystallization, foams, moisture and texture. The result is something people are glad to eat.

Panning gummies in a small coating pan

Free 30-minute call

Have a candy project in mind?

Tell me what you’re making and where it’s stuck. The first call is free.

kathleenoc96@gmail.com