Who or what is Chinnamasta the tantric diety what is the secret of her mysterious form?

In visual imagery, Chinnamasta is shown standing on the copulating couple of Kamadeva and Rati, with Rati on the top. They are shown lying on a lotus.

There are two different interpretations of this aspect of Chinnamasta's iconography. One understands it as a symbol of control of sexual desire, the other as a symbol of the goddess's embodiment of sexual energy.

The most common interpretation is one where she is believed to be defeating what Kamadeva and Rati represent, namely sexual desire and energy. In this school of thought she signifies self-control, believed to be the hallmark of a successful yogi.

The other, quite different interpretation states that the presence of the copulating couple is a symbol of the goddess being charged by their sexual energy. Just as a lotus seat is believed to confer upon the deity seated atop its qualities of auspiciousness and purity, Kamadeva and Rati impart to the Goddess standing over them the power and energy generated by their lovemaking. Gushing up through her body, this energy spouts out of her headless torso to feed her devotees and also replenish herself. Significantly here the mating couple is not opposed to the goddess, but an integral part of the rhythmic flow of energy making up the Chinnamasta icon.

The image of Chinnamasta is a composite one, conveying reality as an amalgamation of sex, death, creation, destruction and regeneration. It is stunning representation of the fact that life, sex, and death are an intrinsic part of the grand unified scheme that makes up the manifested universe. The stark contrasts in this iconographic scenario-the gruesome decapitation, the copulating couple, the drinking of fresh blood, all arranged in a delicate, harmonious pattern - jolt the viewer into an awareness of the truths that life feeds on death, is nourished by death, and necessitates death and that the ultimate destiny of sex is to perpetuate more life, which in turn will decay and die in order to feed more life. As arranged in most renditions of the icon, the lotus and the pairing couple appear to channel a powerful life force into the goddess. The couple enjoying sex convey an insistent, vital urge to the goddess; they seem to pump her with energy. And at the top, like an overflowing fountain, her blood spurts from her severed neck, the life force leaving her, but streaming into the mouths of her devotees (and into her own mouth as well) to nourish and sustain them. The cycle is starkly portrayed: life (the couple making love), death (the decapitated goddess), and nourishment (the flanking yoginis drinking her blood).

I prefer bread and wine, thanks.