I forgot the rest of your questions Meg! As far as food costs the 30% or under rule ,in the mobile food ending business the food costs are way less.Think about a funnel cake which costs pennies in product,but sells for $3.00 or more at a fair.The last time I checked on hotdogs I think food cost was around $.30 and they sell for $1.50 to $3.00 depending where you are at.As far as soups,sure you can sell soups ,but they have to be prepared according to the rules of the local health department.