Sanitize all work areas, cutting boards, equipment and sinks used in the preparation of this recipe.
Combine saffron and lemon juice into a stainless-steel bowl.
Allow saffron to bloom for 5 minutes.
Combine all ingredients into the bowl of a stand mixer fitted with a paddle attachment.
Mix on low speed for 2 minutes. Scrape down the sides and bottom of the bowl.
Increase to medium speed.
Continue mixing until butter is fluffy and the volume has increased by 25%, about 4 minutes. Scrape down the sides and bottom of the bowl. Taste and adjust seasoning as needed.
Transfer to clean food storage containers. Cover, label, date and store refrigerated &/or for service.
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