lemonis: northland lab is one of the world's leading researchers on food nutrition. good morning!gretchen: hey. gretchen. lemonis: i'm marcus. gretchen: nice to meet you. lemonis: this is my partner, dave. gretchen: hi, dave. nice to meet you. lemonis: this should be and eye -opening experience for dave. so, where's the goulash? dave: didn't bring that one. lemonis: and the bacon cheeseburger? dave: i could've brought that but... lemonis: you were scared to bring that. dave: yes. lemonis: so, that means you already know it's bad. dave: yes. lemonis: we're gonna test the african-peanut soup. let's do it. your life's work being blended up. gretchen: this is gonna tell us the total protein. we're reading the nitrogen-gas content that comes off of the combusted sample. lemonis: and so the protein here is 6%. gretchen: so, this is how we test calcium, sodium, and iron for your nutrition label. so, this is an automated method for looking at the fiber content. lemonis: so, could you take a soup like ours and then add something to it that could make it have fiber? dave: metamucil. lemonis