Can I use this on a spiral ham?
Yes, and it is basically made for it. Brush some glaze between the slices where you can, then do 2 to 3 rounds of glazing near the end so the top gets sticky and shiny without turning bitter.
When should I put glaze on ham?
Add glaze toward the end. Ham is already cooked most of the time, so you are mainly heating it through. If you glaze too early, the sugar can burn before the center is hot. Start glazing in the last 30 minutes, then reapply every 10 to 15 minutes.
What internal temperature should ham reach?
Fully cooked, ready-to-eat ham: heat to about 140°F (or follow the package). Cook-before-eating ham: follow the package directions, and plan on at least 145°F. When in doubt, the label wins.
How do I keep the glaze from burning?
Keep the oven around 325°F, glaze late, and tent loosely with foil if the top is getting too dark. Also, do not reduce the glaze into a candy in the saucepan. You want syrupy, not thick like taffy.
What can I substitute for pineapple juice?
Orange juice works well. Apple juice is also great and a little more mellow. If you use orange juice, consider adding an extra teaspoon of vinegar to keep the balance.
Can I make the glaze ahead?
Yes. Make it up to 4 to 5 days ahead and refrigerate promptly. Warm it gently (microwave or stovetop) so it loosens up before brushing.
Is this glaze very sweet?
It is sweet, but it has guardrails. Dijon, garlic, and vinegar keep it from tasting like straight brown sugar syrup.