Come back when we have developed ours DIY Four Thieves® Essential Oil Blend Recipe for widespread and external use, we have received many inquiries about taking the mixture internally. We never recommend taking essential oils because they are too concentrated. However, the herbs that are the foundation of the inedible essential oil blend are also a perfect base for a very edible (and delicious) herbal vinegar. Four Thieves Vinegar is great for kitchen, body care and wellness recipes and is also an effective vinegar-based spray cleaner that has a nice scent. Plus, there's something especially satisfying about putting your own personal spin on a classic formulation that's been part of the herbal lexicon for 500 years. This infused vinegar is a long-time favorite of mountain rose plants!