Oleoresins are resinlike viscous materials obtained when a spice is extracted with a hydrocarbon solvent. The solvent is removed by vacuum distillation and reused. Oleoresins are 5–20 times stronger in flavor than their corresponding spices and are weaker than the corresponding essential oils. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.