This could be down to a few things:

• The bottom of your EGG might be clogged with ash. Empty it out using the Ash Tool.
• Your Firebox might also be clogged with ash. Give the holes a clean.
• Always ensure that you’re using good-sized, quality lumpwood charcoal that’s filled to the top of your Firebox. Using damp charcoal won't do you any favours either.
• You might actually be getting the temp you're after, but the thermometer needs to be recalibrated. To do so, follow the instructions here.
• Are you regularly using your EGG? If not, the inside might have dampened a bit and need some time to dry out.

Fill your firebowl up to 2" / 5cm below your cooking surface. When you're done cooking, the charcoal can be re-used. Simply rake through it with an Ash Tool, top up as required, and light as usual.

When your EGG gets to high temperatures, there's a chance that you'll get a flare-up when opening the lid. To prevent this from happening, you'll need to 'burp' it — which is as simple as lifting the lid about 2 inches before you open it fully.

This limits the amount of oxygen that comes into contact with the heat and flames, and should prevent any flare-ups. Get in the habit of doing this whenever you open the lid, and you'll be an EGGspert in no time.