Can I add English tea in my secondary? Will I spoil it?

[kukubau]

I've started the biggest cider batch (15 gallons) ever, but I was reluctant to add anything else to it. Is it too late to add some English tea to supplement the lack of tannins and give my cider a bit of body?
Could you recommend me what tea to add?

 

[Maylar]

Yup, I do it all the time. 1/2 cup per gallon of strong black tea works for me.