Is there a way to force ripening of sweetcorn kernals?

[kt.]

We have now finished our early sweetcorn and starting one of our three mid-late season varieties.  My Conqueror and Incredible have full sized cobs of corn but the kernels are still white so I am leaving the plants in the ground for another month or so.  I know you can force green tomatoes red but is there an artificial way of ripening sweetcorn to yellow for harvest

[kt.]

[chriscross1966]

I'd check the kernels for ripeness by squeezing one, I've grown Incredible and from memory it isn't that late, or indeed, that yellow when ripe...

chrisc

[laurieuk]

There are many white varieties now.

[davyw1]

There is no way to force ripen sweetcorn, When the tassles have turned black then they are ripe.