Could I double major in a completely different subject (Food Science & Electrical Engineering)? I feel like they are at the same level of interest in my mind.
Certainly not in four years. Probably not even in five. Quite possibly not at all.
Why would you want to do this? What career would utilize both? I can understand having an interest in both, but you’re going to have to decide eventually - you can’t work in both fields simultaneously.
Here are curricula for both majors at the same university (Purdue, which is excellent for both.)
https://engineering.purdue.edu/ECE/Academics/Undergraduates/UGO/pdf/BSEE%20Sample%20Plan.pdf
https://ag.purdue.edu/foodsci/undergrad/Documents/FDSC%20Plan%20of%20Study%20130%20credit%20before%20fall%202013.pdf
Look at the requirements for each and the limited open space in each schedule. You can see for yourself how long it would take to get through everything. And for what?
If you want to study engineering and work in the food science field, then look for a program that has a food engineering track. Like this one https://bbe.umn.edu/undergraduate/bbe/food-engineering
Certainly, people double-major in unrelated fields all the time. But this works mainly with academic majors rather than pre-professional ones. It’s dirt-easy to double-major in, say, French and Sociology. But as an engineering major, it’s more likely that you’d only be able to fit in a minor in an unrelated field. A full-blown major in another subject like French or Sociology is hard to fit in. A second pre-professional major without significant overap? Just not workable.
I’d suggest starting out in engineering at a school that has a food science program. Maybe taking a few food science electives. Then you’ll be positioned to change majors if you want, or if you really REALLY want to do both, move into an entry-level masters program in food science after you finish your engineering degree.
But still, ChemE or Bioegineering or Agricultural Engineering would be a lot more combinable, as far as someday having a job that draws on both knowledge bases. You can still take EE electives in some of these programs.
Thanks for your advice. I think what I will do is to study engineering first and some food science elective to see which way should I actually go.