A technique for combining crude oils into a blended crude oil according to a target total boiling point for the blended crude oil is provided. In one embodiment, a method includes pumping individual crude oil streams into a blending system and mixing the individual crude oil streams into a crude oil blend in the blending system according to a blend recipe. The method also includes adjusting the blend recipe during mixing of the individual crude oil streams according to a target total boiling point curve for the crude oil blend, and continuing to mix the individual crude oil streams into the crude oil blend in the blending system according to the adjusted blend recipe. Additional systems, devices, and methods are also disclosed.