Yes, you will have many loose florets leftover, especially if your cauliflower heads are large. No worries. You can store leftover raw cauliflower florets in a resealable bag or airtight container in the fridge for 5 days. Use the florets to make my Creamy Cauliflower Soup or Crispy Cauliflower Tacos. Or keep them raw and snack on them with my addictively good Hummus. You can also pickle the florets, as in this recipe from Bryant Terry. Or blanch the cauliflower for 2 minutes, transfer it to an ice bath, and then freeze the florets; use them in smoothies!