Bold and flavorful pasta sauce. More than a full serving of veggies in every 1/2 cup of pasta sauce. America's No. 1 pasta sauce brand. Ragu believes in helping moms feed our kids well. That's why Ragu Robusto! Pasta Sauce is 100% natural, has no artificial additives or preservatives and is packed with more than a full serving of veggies in every 1/2 cup of pasta sauce. Ragu - feed our kids well. All ingredients are natural or naturally derived. 100% natural. A good source of vitamins A & C.