rendr allows you to use cookies with the rendr engine and write and read cookies both server and client side

rendr cookies

right now only reading cookies works...

in therory, add the cookies module to your rendr app. Include the cookies module when compiling for client side, and you should be able to work with cookies either client side or server side

var cookies = require("rendr-cookies");
module.exports = BaseApp.extend({
  cookies : cookies   
// in a model or collection, "cookieName");

this will change