Always been impressed with Cillit Bang, although I haven't used it on a hob.
I usually give it a while to soak in and then clean off.
Cillit Bang Grease & Sparkle
If it's burnt on crud from the bottom of the frying pan on the hob I use a green scourer, or one of these: https://www.amazon.co.uk/Halogen-Ce...coding=UTF8&psc=1&refRID=THWNMSMTMVBZ8V2TAX7W
Applied delicately
If it's burnt on crud from the bottom of the frying pan on the hob I use a green scourer, or one of these: https://www.amazon.co.uk/Halogen-Ce...coding=UTF8&psc=1&refRID=THWNMSMTMVBZ8V2TAX7W
Applied delicately