Spinach dips are very popular at many restaurants and this recipe turns it into a foam for dipping. It can be served with roasted pita squares or even just vegetables and chips. You can also use this dip as a sauce for steak or chicken.
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Heat a pan over medium to medium-high heat. Add the butter and melt. Add the onion and sauté until it becomes translucent. Add the garlic and cayenne powder and cook for 2 minutes. Add the spinach and let it wilt slightly. Add remaining ingredients and blend together. Adjust for seasonings, then bring to a simmer and let simmer for five minutes.
Remove from the heat, pour into a container and let cool at room temperature, or in an ice bath, then place in the refrigerator to finish setting. Once fully set, puree the gel until it forms a smooth dip. If needed, cream can be added to thin the dip and xanthan gum can be added to thicken it.